Security Forem: Emir K.

How to Disable Local User Accounts on All Domain Computers Using Group Policy in Windows Server 2022

Emir K. — Sun, 30 Nov 2025 16:34:40 +0000

Disabling local user accounts on all domain‑joined client computers via Group Policy is a valuable security practice. It ensures users only log in with domain accounts, preventing the risks associated with unmanaged local accounts, such as weak or shared passwords.

Why Disable Local Accounts

Local accounts can be security risks if passwords are weak or shared among users.
Domain accounts allow centralized control and auditing, improving security.
Disabling local accounts centrally via Group Policy (GPO) avoids manual configuration on each machine, ensuring uniform policy enforcement.

Prerequisites and Planning

You must have an Active Directory domain with Windows Server 2016, 2019, or 2022 and domain-joined Windows 10/11 clients.
Know the exact username of the local account you want to disable (e.g., testuser, localadmin).
Test the GPO on a small group of computers first to avoid unintended lockouts, especially of local administrators.

Creating and Linking a New GPO

On the domain controller, open Server Manager → Tools → Group Policy Management.
In the console, locate the domain or the Organizational Unit (OU) that contains your client computers.
Right-click the domain or OU and select Create a GPO in this domain, and Link it here…. Name the GPO, e.g., Disable Local User .
The GPO is now linked and ready to be edited.

Configuring Local Users and Groups Preferences

Right-click the new GPO and select Edit.
Navigate to: Computer Configuration → Preferences → Control Panel Settings → Local Users and Groups.
In the right pane, right-click and choose New → Local User.
In the new local user dialog:
Set Action to Update.
Enter the exact User name of the local account to disable.
Check the box for Account is disabled.
Click OK to save.

This setting will find the specified local user on every targeted client and disable the account.

Applying and Verifying the Policy

Run gpupdate /force on the domain controller and client machines to speed up policy application.
On a client, open Computer Management → Local Users and Groups → Users and refresh to check that the targeted account is disabled.

You can add multiple local user accounts in the same GPO for disabling by creating multiple Local User preference items.

This approach provides centralized, automated control over local accounts in your domain environment, enhancing security and management efficiency.

Master Oracle Cloud Infrastructure 2025 Networking: Your Guide to the 1Z0-1124-25 Certification

Emir K. — Mon, 25 Aug 2025 17:37:24 +0000

Master Oracle Cloud Infrastructure 2025 Networking: Your Guide to the 1Z0-1124-25 Certification

A deep dive into the Udemy course designed to help you ace the OCI Networking Specialist exam with 180+ practice questions and hands-on examples.

Welcome to the world of Oracle Cloud Infrastructure (OCI) networking! If you're targeting the 1Z0-1124-25: Oracle Cloud Infrastructure 2025 Networking Specialist certification exam or simply want to deepen your expertise in OCI network architectures, you've come to the right place.

My comprehensive Udemy course is a complete guide designed to take you from foundational concepts to specialist-level proficiency, equipping you with the knowledge and skills to tackle real-world OCI networking challenges.

👉Enroll Now on Udemy: 1Z0-1124-25 Oracle Cloud Infrastructure 2025 Networking Course

What Will You Learn In This Course?

This course is carefully structured to cover all key domains outlined in the official Oracle exam guide.

Key topics we will explore include:

Virtual Cloud Networks (VCN): The foundation of OCI networking. You will learn how to design, implement, and manage VCNs, subnets, route tables, Network Security Groups (NSGs), and Security Lists (ACLs).
On-Premises Connectivity: Implement and configure Dynamic Routing Gateway (DRG), FastConnect, and VPN Connect for secure and reliable hybrid cloud connections between your data center and OCI.
Advanced Network Services: Dive deep into Load Balancing, DNS Traffic Management Steering Policies, and the Web Application Firewall (WAF).
Network Security: Master OCI's "Zero-Trust" model through a detailed understanding of NSGs, security zones, and best practices for locking down your cloud resources. -** Troubleshooting & Monitoring**: Learn to use powerful tools like VCN Flow Logs and Network Path Analyzer to diagnose and resolve complex network issues.

Who Is This Course For?

Network Engineers and Architects looking to transition their skills to Oracle Cloud.
Cloud Practitioners and DevOps Engineers who need a deep understanding of OCI networking to deploy and maintain applications.
IT Professionals preparing for the Oracle Certified Specialist exam (1Z0-1124-25).
Students and beginners aiming to start a career in cloud networking.

The Ultimate Goal: 180+ Q&A for Exam Mastery

The core of this course is a database of over 180 detailed questions and answers. This isn't just a simple test bank for memorization; each question is a learning opportunity. Every answer is thoroughly explained, often with diagrams and configuration screenshots, so you understand why an answer is correct, not just what the correct answer is.

This approach allows you to:

Test your knowledge effectively.
Identify and strengthen weak areas.
Build the confidence needed to pass the challenging certification exam.
Gain practical knowledge applicable to real-world projects.

Get Ready for Success in 2025

Cloud networking is constantly evolving. This course is updated for 2025 and reflects the latest OCI features and best practices. You will not only be prepared to pass the exam but also equipped with in-demand skills that employers are looking for today.

With this course, you get:

In-depth explanations of every concept.
Over 180 practice questions with detailed rationales.
Clear diagrams and visualizations of complex architectures.
Lifetime access – I will update the course as OCI adds new functionalities.
Direct Q&A support – ask me questions anytime via the Udemy platform.

Don't delay your journey to mastering OCI networking. Enroll in the course today and take the first step toward earning your certification!

👉 Click here to access the course on Udemy

Have any questions? Feel free to leave them in the comments below!

Linux Security Checkup: Comprehensive Guide to Quick Audit Essentials

Emir K. — Sun, 01 Dec 2024 18:31:31 +0000

Securing a Linux system is critical for maintaining data integrity, ensuring privacy, and mitigating risks from potential attacks. Regular security audits help identify potential vulnerabilities and ensure that systems are running optimally. This guide outlines essential security concepts, tools, commands, and scripts that system administrators can use to perform quick and effective security audits on Linux systems.

Basic Security Concepts
Account and Authentication Security
File and Directory Permissions
Network Security and Monitoring
System Updates and Patching
Logs and Monitoring
Secure Boot and Kernel Parameters
Automating Tasks with Scripts
Conclusion

💥1. Basic Security Concepts💥

Before diving into the tools and steps for a security audit, it's important to understand some foundational security concepts:

✳User Management: Regularly monitor user accounts and permissions to ensure that only authorized individuals have access.
✳Process Monitoring: Keep an eye on running processes to detect any unauthorized or suspicious activities.
✳Network Security: Monitor network connections to identify unusual traffic or open ports that could signify a breach.
✳Log Analysis: Regularly check system logs for signs of security incidents or system issues.
✳File Permissions: Ensure that files and directories have appropriate permissions to prevent unauthorized access.

💥2. Account and Authentication Security💥

✨Check for Unused Accounts: Review all accounts in /etc/passwd for inactive or unnecessary users. Disable or remove accounts that are no longer needed.

awk -F: '{ print $1 }' /etc/passwd

✨Enforce Password Policies: Use tools like chage to ensure password aging and complexity requirements. Set minimum and maximum password age, and enforce complexity.

sudo chage -l username

✨Disable Root Login over SSH:

nano /etc/ssh/sshd_config

enter PermitRootLogin no
and restart SSH service

sudo systemctl restart sshd

💥3. File and Directory Permissions💥

✨Audit File Permissions: Use find to locate files with improper permissions and restrict permissions on files that are world-writable.

find / -type f \( -perm 777 -o -perm 666 \) -exec ls -l {} \;

✨Check for SUID/SGID Files: Identify files with elevated privileges and verify the necessity of SUID/SGID bits and remove them if not required.

find / -perm /6000 -type f -exec ls -l {} \;

💥4. Network Security and Monitoring💥

✨Enable a Firewall: Use ufw (Uncomplicated Firewall) or iptables to restrict unauthorized traffic and define rules to allow or deny specific traffic.

sudo ufw enable

✨Check Open Ports:

sudo netstat -tuln

nmap -sS -p 1-65535 localhost

✨Monitor Network Connections:

lsof -i

💥5. System Updates and Patching💥

✨Verify Update Settings:

# For Debian-based systems:
sudo apt update && sudo apt upgrade

# For Red Hat-based systems:
sudo yum update

✨Automate Updates:

sudo apt install unattended-upgrades
sudo dpkg-reconfigure --priority=low unattended-upgrades

💥6. Logs and Monitoring💥

✨Review Logs Regularly: Check critical logs in /var/log/ (e.g., auth.log, syslog, secure).

sudo tail -f /var/log/auth.log

✨Set Up Log Monitoring: Use tools like Logwatch or Rsyslog for alerting.
✨Enable Audit Logging: Install and configure auditd for detailed tracking.

sudo apt install auditd
sudo service auditd start

💥7. Secure Boot and Kernel Parameters💥

✨Secure GRUB Bootloader: Set a password in /etc/grub.d/40_custom to prevent unauthorized kernel boot options and after add the generated password hash to GRUB configuration.

sudo grub-mkpasswd-pbkdf2

✨Harden Kernel Parameters: Edit /etc/sysctl.conf to include:

net.ipv4.ip_forward = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.all.send_redirects = 0

sudo sysctl -p

💥8. Automating Tasks with Scripts💥

To enhance efficiency, you can automate routine security checks using shell scripts.
✨✨Here is the example Script: Security Audit Script✨✨

nano security_audit.sh

#!/bin/bash

echo "Starting Security Audit..."

# Check for Unused Accounts
echo -e "\nChecking for unused accounts..."
awk -F: '{ print $1 }' /etc/passwd

# Enforce Password Policies
echo -e "\nPassword policy for user 'username':"
sudo chage -l username

# Check currently logged-in users
echo -e "\nCurrently logged-in users:"
w

# List running processes
echo -e "\nRunning processes:"
ps aux

# List open network connections
echo -e "\nOpen network connections:"
netstat -tulpn

# Scan for open ports
echo -e "\nScanning for open ports:"
nmap -sS localhost

# Check authentication logs for failed login attempts
echo -e "\nFailed login attempts:"
sudo grep "Failed password" /var/log/auth.log

echo "Security Audit Complete."

Make the script executable:

chmod +x security_audit.sh

Run the script:

./security_audit.sh

💥9. Conclusion💥

Performing a quick Linux security audit involves a combination of proactive checks and ongoing monitoring. By utilizing the tools, commands, and scripts discussed, you can streamline your daily security checks and quickly identify potential issues. Remember to:
✳Keep your system and software up to date.
✳Monitor logs regularly for any unusual activities.
✳Limit user permissions to the minimum necessary.
✳Use automation to reduce manual workload and minimize errors.
✳Regularly backup critical data and test recovery procedures.
✳Harden your system by following best practices for file permissions, network security, and user management.
Regular audits, combined with robust policies, will go a long way in ensuring a secure Linux environment.

💥💥Share Your Thoughts💥💥

Do you have additional tips or scripts that help in Linux security audits? Share them in the comments below!

HOW TO SELL DISASTER RECOVERY TO SENIOR MANAGEMENT

Emir K. — Wed, 15 Nov 2023 19:05:43 +0000

💥EXECUTIVE SUMMARY 💥

If you’re like many organizations and you have an inadequate disaster recovery (DR) program that leaves you vulnerable to risks, such as loss of revenue or penalties and fines, not to mention the potential for negative impacts to your business reputation due to downtime or data loss, then this article is for you.

Despite these risks, you’re likely having a difficult time justifying an adequate investment in DR to your senior management. You may feel like the only way you can attract management’s attention to this issue is to manually pull the plug on your data center on a regular basis.
This article gives you strategies for getting on the same page as senior management regarding DR.

These strategies include:

Striking the use of the term “disaster” from your vocabulary, making sure management understands the return on investment (ROI) of IT Recovery;
Speaking about DR the right way - in terms of risk mitigation;
Pointing management toward a specific solution.

💥HAVING TROUBLE SELLING DR TO SENIOR MANAGEMENT?💥

One reason relates to common attitudes towards risk. While people are risk-averse and willing to pay to mitigate risk, they do so only when their own money is at stake. When company money is on the line, they’re far more willing to take risks. As a Senior Analyst at Forrester Research said, “Organizations are willing to accept far more risk than I would have ever thought possible.”

Another reason for this challenge is that organizations, like yours, believe that they have a comprehensive DR program when, in fact, their program is incomplete. Organizations often install backup/recovery hardware and software but fail to consider the processes necessary to implement a DR solution.

This includes:

✳Mapping business processes to all the supporting applications and IT systems so the DR plan protects the entire business process rather than isolated applications;
✳Develop complete recovery processes to ensure that the data at the center is fully recoverable;
✳Fully testing DR plans with end user and application stakeholders' involvement;
✳Pre-configuring and validating end-user access;
✳Using the results of testing to optimize recovery plans;
✳Implementing comprehensive processes for change management to sync recovery processes to changes in IT systems;
✳Categorizing business criticality with application tiering
✳Educating and collaborating with management on tiering structures for better RTO and RPO outcomes and the business impact.

💥HAVING AN INADEQUATE DR PLAN CAN NEGATIVELY IMPACT YOUR ORGANIZATION💥

What happens when you have an inadequate DR plan:

✳Interrupted service - During Hurricane Dorian in 2019, data centers throughout the Southeastern U.S. and Canada experienced interruptions due to flooding.
✳Lost sales and revenue - In 2019, American Airlines confirmed there was an issue with the Sabre flight reservation and booking system, used by several major airlines-including WestJet, Alaska Airlines, and JetBlue. Any type of downtime can cause millions of dollars in lost sales and revenue.
✳High costs - 93% of companies without Disaster Recovery who suffer a major data disaster are out of business within one year.
✳Potential supply chain disruptions - Disruptions to one partner can cause problems for partners up and down the supply chain, which means that a company may not be able to deliver products due to events that occur around the world.
✳Loss of reputation due to bad press about an outage - For example, on February 7, 2019, Wells Fargo tweeted, “We’re experiencing a systems issue that is causing intermittent outages, and we’re working to restore services as soon as possible. We apologize for the inconvenience.” Many customers returned with tweets bashing the bank which affected Wells Fargo’s reputation and ultimately their business.

Despite these risks, many IT organizations continue to face significant challenges in persuading senior management to provide the budget necessary to implement comprehensive DR programs.

💥CAPTURE THE ATTENTION OF SENIOR EXECS💥

So how can you get your executives to pay attention to DR so you can protect your organization from data center interruptions?

The following strategies can help you achieve this goal:

✨Strike the term “disaster” from your vocabulary. When people think about disasters, they imagine low-probability events, such as widespread regional outages caused by floods, earthquakes, and acts of terrorism. Yet most downtime is caused by mundane events, including hardware failure, severe weather, human error, or power outages. In addition, there has also been a rise in malicious employee-based incidents and external security events causing havoc in IT environments. Senior management is far more likely to pay attention to high-probability events. By excising the word “disaster” from your vocabulary, and referring to this challenge as IT Recovery, you can prevent senior management from seeing DR as something necessary only for unlikely events.
✨Refer to IT recovery in terms of risk mitigation. C-level executives understand the concept of risk and are comfortable thinking in terms of risk mitigation. Talk about the risk of losing thousands to hundreds of thousands of dollars in revenue due to the interruption of a mission-critical application. One way to approach this would be:
- 📒Identify all the risks.
- 📒Prioritize them by probability and business impact, which is defined as the hours of downtime multiplied by the cost per hour of downtime. Remember that costs can vary seasonally. The cost of downtime may be greater when the organization is working on end-of-year financials or during peak holiday seasons.
- 📒Ask executives to identify the risks they’re willing to mitigate versus the risks they are willing to accept (leave unmitigated).
- 📒Work with executives to develop a program that starts with mitigating the highest-probability, highest-impact risk, but that then evolves over time to address lower-probability events.
✨Explain the benefits of IT Recovery. Make sure management understands the benefits they can achieve from IT recovery, including:
- 📒Get a competitive advantage. A customer experiencing one frustrating event can easily move their business elsewhere.
- 📒Generate more revenue. At the most basic level, faster recovery means your mission-critical, revenue-supporting applications stay, well, up. But you can also turn IT recovery into a revenue-generating mechanism. For example, an outsourcing customer is charged one price for hosting an application-as-a-service and a higher price for recovering that application.
- 📒Address supply chain demands. When your organization is part of a supply chain, your customers may demand to know what will happen if you go down. By implementing an IT recovery program, you can respond to these customer demands.
- 📒Meet regulatory and compliance requirements. Many laws and regulations require organizations to implement risk mitigation policies, practices, and procedures. An IT recovery program allows you to meet these requirements.
- 📒Fulfill service-level agreements (SLAs). Many business agreements include SLAs that specify penalties for noncompliance or non-performance. An IT recovery plan helps organizations avoid these penalties.
- 📒Meet fiduciary responsibilities. C-level executives commit to implementing practices and programs that protect their business. CFOs must be responsible stewards of their shareholder’s assets.
- 📒C-level executives can go to jail or receive personal fines if they don’t comply with these requirements. This is why C-level executives’ roles require them to think about IT recovery.
✨Point Management to a Specific Solution. It may work best to not simply focus on the fact that management needs to spend more on IT recovery but rather to recommend which applications require an active recovery plan. To simplify implementation, think about cloud IT recovery just as you would any other business process.

💥SHOULD YOU PERFORM IT RECOVERY IN-HOUSE OR OUTSOURCE?💥

Outsourcing can play a key role in implementing your IT recovery process. To help you determine whether this is the appropriate course for your organization, ask yourself the following questions:

Do you face any regulations that would prohibit outsourcing❓➡ Even if such regulations exist, you may be able to outsource strategically. Look at your organization and determine whether you have any tasks that you are permitted to outsource. By offloading these tasks, you can focus internal resources on areas that are highly regulated.
Do you fear a loss of control❓➡ By employing an outside party to provide IT services, you may be concerned that you are letting another group of individuals access your data and systems. To mitigate this risk, make sure that the outsourced service provider has safeguards to protect information against unauthorized access or false manipulation during creation, transmission, storage, and retrieval operations involving third parties. Also, be sure the outsourcer understands and addresses your compliance requirements.
Are you concerned about increased risk❓➡ Some cloud service providers are viewed as taking control away from your organization’s IT department, which may cause concern about whether you are truly protected. If you are concerned with loss of control, select a cloud service provider that operates as an extension of your IT organization under your guidelines.
Do you want to lower your total cost of ownership (TCO) for your IT recovery program❓➡ With traditional on-premises DR solutions, you need to purchase hardware, software, and other infrastructure according to a 1:1 scale for your production data center, and then you will need to purchase more as your data grows. The overall TCO for an outsourced DR solution-including the program, hardware, and recovery software significantly lower than for in-house solutions. Lower hardware and software costs result from the outsourced provider’s ability to achieve economies of scale when acquiring technology for use by a large number of customers as well as specialized expertise in implementing and maintaining these solutions. Outsourced service providers reduce program costs by investing in automation technologies, including libraries and templates of run-books and procedures, that dramatically reduce the time it takes to develop. At the same time, the expertise, pre-developed procedures, and automation that service providers deliver all work together to make IT recovery programs more effective.

💥DO YOU WANT TO FOCUS ON IT RECOVERY INSTEAD OF BUSINESS STRATEGY?💥

Many organizations find that having in-house staff perform IT recovery diverts valuable IT resources from supporting the organization’s core business activities. Faced with the high costs and substantial staff necessary to design and implement an IT recovery plan, many organizations are turning to managed service providers to perform these tasks rather than do so in-house.

With considerable expertise specifically devoted to IT recovery, cloud service providers can help you achieve the following:

Speed ➡DRaaS provides much faster, automated, and more reliable recovery options than traditional DR approaches with years of DR expertise.
Lower cost and improvements to reliability ➡ Many IT services traditionally performed on-premises are now available as a service, eliminating the additional costs of investing in infrastructure and capital expenses.
Improved administration ➡ Lowers the administrative burden placed on IT and frees up team members to handle tasks that provide greater business value.
Seamless redundancy and scalability ➡ Provide peace of mind with no loose ends to chase or worry about. Services provide cost-effective redundancy for all critical business information systems but also enable routine validation testing.
Global standardized solution ➡ One provider, one technology, and one solution can give you global accessibility from one interface.

💥ARE YOU CONFIDENT THAT YOUR SYSTEMS AND DATA ARE RECOVERABLE?💥

Given the risks you have identified, can you prove to your board of directors that you can recover when you need to? Usually, the best way to provide this proof is through regular testing or third-party audits (for companies in highly regulated industries).
⏰Testing is essential to ensure a DR plan works properly, but it can take days to manually adjust and retest, shutting down both production and recovery sites. Businesses can take about 50 hours
for test planning, on average. Setting up and tearing down the test environment takes anywhere from 80 hours for a small organization to 768 hours for a large enterprise.
⏰Testing also requires a sizable team for test planning, startup testing, ongoing testing, and setup and teardown of the environment. A test team for a small business includes about 13 engineers. A large enterprise can need as many as 103 engineers.

💥SUMMARY/CONCLUSION💥

Following the strategies outlined in this article will allow you to justify the investment in IT recovery to senior management. Checking into a cloud solution provider can make it easier for you to point management to a specific, proven, and comprehensive solution.

🙋‍♂️💻More about Autor 🖱️💻

How to Bypass YouTube's Anti-Ad Blocker Popup with Ublock Origin

Emir K. — Sun, 29 Oct 2023 20:01:53 +0000

Introduction:

Are you tired of the constant interruptions while trying to watch your favorite YouTube videos due to the annoying anti-ad blocker popup? I have the solution for you. In this post, I'll guide you through the steps to bypass YouTube's anti-ad blocker popup using the Ublock Origin browser extension. It's a quick and easy process that will ensure you can enjoy ad-free videos hassle-free.

Step 1: Download Ublock Origin

The first step is to download Ublock Origin, a free and open-source browser extension. You can get it from the official website, ublockorigin.com. Ublock Origin is compatible with major browsers like Firefox, Chrome, Opera, Edge, and more.

Step 2: Open the Ublock Origin Dashboard

After successfully installing the Ublock Origin extension, you'll notice its icon in your browser. Click on the icon to open the Ublock Origin dashboard.

Step 3: Purge All Caches

Inside the Ublock Origin dashboard, navigate to the "filters lists" tab. Here, you should see an option to purge all caches. Click on it. This step ensures that you have the latest and cleanest filters for optimal ad-blocking performance.

Step 4: Update Filters

With the caches purged, it's time to update your filters. Simply click the "update now" button in the dashboard. This action will ensure that Ublock Origin is using the most up-to-date filter lists to block ads effectively.

Step 5: Verify with "match ublock" Website

To confirm that Ublock Origin and its filters are in sync with YouTube's anti-ad blocker detection script, visit the "match ublock" website. This website will inform you if the latest version of Ublock Origin matches YouTube's anti-ad blocker measures. If there's a match, you're all set to enjoy YouTube ad-free!

Check status

Conclusion:

By following these simple steps, you can say goodbye to YouTube's pesky anti-ad blocker popup and enjoy your favorite content without interruptions. Don't forget to help others discover this solution by leaving a comment or liking the video that provided this helpful guide. Happy ad-free watching!

🙋‍♂️💻More about Autor 🖱️💻

The Advantages of Agentless Solutions for Backup - HYCU

Emir K. — Wed, 25 Oct 2023 19:37:22 +0000

In the world of data protection and backup solutions, the choice between agent-based and agentless solutions is a critical decision for businesses of all sizes. But what exactly do these terms mean? Agent-based solutions require the installation of specialized software components (agents) on the systems to be backed up. In contrast, agentless solutions eliminate the need for these agents, offering a more streamlined and efficient approach to data backup. In this article, we will explore the benefits of using agentless solutions and provide real-world examples to illustrate these advantages.

💥Advantages of Using Agentless Solutions💥

📢 Simplified Management:

Agentless solutions simplify the backup process by removing the necessity of managing and updating agents on multiple servers. This streamlines backup operations, reduces administrative overhead, and minimizes the potential for errors.

📝Example: Consider a large enterprise with hundreds of servers spread across various locations. An agentless solution can seamlessly back up these servers without the need for manual agent installations and updates. This results in substantial time and resource savings.
⤵️

📢 Enhanced Scalability:

Agentless solutions are highly scalable, making them an excellent choice for organizations with dynamic and growing infrastructures. You can easily add new servers to the backup process without the hassle of agent deployment.

📝Example: Imagine a cloud-based SaaS provider experiencing rapid expansion. Agentless backup enables them to effortlessly incorporate new virtual machines or services into their backup strategy as their customer base grows.
⤵️

📢 Reduced System Impact:

Agentless solutions significantly reduce the load on production systems during backup processes. This minimizes the risk of performance degradation or service interruptions during backup jobs.

📝Example: A financial institution relies on constant access to its critical database systems. By using an agentless solution, they can perform backups without impacting transactional performance, ensuring business continuity.
⤵️

📢 Improved Security:

Agentless backup eliminates potential security vulnerabilities associated with agents and their management. This results in a more robust defense against cyber threats.

📝Example: In an age when cyberattacks are a constant concern, a healthcare organization can benefit from agentless solutions that reduce the attack surface and enhance data security, safeguarding patient records and sensitive information.

HYCU Backup Solutions

While various backup solutions are available in the market, HYCU stands out as a leading agentless backup solution. HYCU specializes in providing purpose-built data protection for hyper-converged infrastructures and virtualized environments, offering several key advantages:

Application-Awareness: HYCU offers deep integration with applications like Microsoft SQL Server, Exchange, and others, ensuring granular backup and recovery capabilities for critical data.

Efficiency: HYCU's agentless approach reduces complexity and resource consumption, ensuring efficient backups and minimal system impact.

Automation: HYCU simplifies data protection operations through automation, allowing businesses to set up policies and automate backups with ease.

Scalability: HYCU's flexibility accommodates the growth of virtualized environments, making it an excellent choice for dynamic and expanding infrastructures.

Cloud Integration: HYCU provides seamless integration with popular cloud platforms, allowing for easy offsite backups and disaster recovery solutions.

HYCU - Data anywhere->Protected everywhere

In conclusion, the advantages of using agentless solutions for backup are numerous, ranging from simplified management and enhanced scalability to reduced system impact and improved security. HYCU, as an agentless backup solution, excels in these areas and offers a competitive edge for businesses seeking reliable and efficient data protection in a dynamic and ever-evolving IT landscape. As organizations continue to prioritize data security and efficiency, the adoption of agentless solutions like HYCU becomes an increasingly strategic choice.

Linux: Major Distribution Groups and the Top 10 Commands for System and Hardware Monitoring

Emir K. — Tue, 17 Oct 2023 17:10:38 +0000

Introduction to Linux:

Linux, often referred to as GNU/Linux, is a powerful and versatile open-source operating system that has had a profound impact on the world of computing. Developed as a labor of love by Linus Torvalds in 1991, Linux has grown to become a global phenomenon, powering a wide range of devices from personal computers and servers to embedded systems and mobile devices. Its success can be attributed to its core principles of openness, community collaboration, and robustness.

Historical Context:

In the early 1990s, Linus Torvalds, a Finnish computer science student, initiated the Linux project to create a free Unix-like operating system kernel. He released his work under the GNU General Public License (GPL), a license that promotes the sharing and modification of software. This decision laid the foundation for the open-source ecosystem that Linux thrives in today.

Key Characteristics:

Open Source: Linux is distributed under open-source licenses, making its source code accessible to anyone. This openness encourages collaboration and innovation as a global community of developers continually improves and adapts the system.
Diversity: Linux is highly adaptable and can be customized for a wide range of applications. This flexibility has led to the creation of thousands of distributions, or "distros," each tailored to specific use cases.
Stability: Linux is known for its stability and reliability, which makes it an excellent choice for servers, where uptime is critical. Many Linux distributions offer long-term support (LTS) versions for extended reliability.
Security: Linux is recognized for its robust security features. Regular updates and the capability to control and monitor system access make it a preferred choice for security-conscious users and organizations.
Performance: Linux is designed for efficiency and optimal resource utilization. This efficiency is one of the reasons it powers many high-performance computing clusters and supercomputers.
Community-Driven: The Linux community is vast and diverse. Users, developers, and organizations worldwide contribute to its development and offer extensive support and documentation.
Cost-Efficiency: Being open source, Linux is a cost-effective solution, as it doesn't require licensing fees. This makes it a popular choice for businesses and individuals alike.
Portability: Linux can run on a wide range of hardware architectures, making it adaptable for various devices, from smartphones to embedded systems.
Command Line Interface (CLI): While Linux distributions offer graphical user interfaces, the command line remains a powerful and efficient tool for experienced users to manage and configure the system.

Linux's enduring popularity and success are not only a testament to its technical strengths but also to the vibrant and passionate community that surrounds it. Whether you're a developer, system administrator, or an individual user, Linux offers a world of possibilities and opportunities to explore and harness the power of open-source computing.

Linux Distribution Groups:

Linux, being open-source and highly adaptable, has given rise to a multitude of distributions, each tailored to specific use cases and preferences. These distributions are often categorized into three primary groups:

Debian-based Distributions:

Historical Context: Debian, established in 1993, is one of the earliest and most respected Linux distributions. Its founding principles revolve around free software and a commitment to stability. Debian-based distributions are entirely free.
Characteristics: Debian-based distributions are known for their reliability and strict adherence to free software principles. They often employ the APT (Advanced Package Tool) package management system for easy software installation and updates.
Examples: Ubuntu, Linux Mint, elementary OS, and countless others.

Red Hat-based Distributions:

Historical Context: Red Hat, founded in 1993, is a prominent figure in the business world. Red Hat Enterprise Linux (RHEL) is the flagship distribution, with a strong focus on support and reliability.
Characteristics: Red Hat-based distributions are recognized for their stability, long-term support, and suitability for enterprise environments. While RHEL is a paid product, there are free alternatives like CentOS and Fedora within this group. They use the RPM (Red Hat Package Manager) for package management.
Examples: CentOS, Fedora, and RHEL itself (paid).

Arch-based Distributions:

Historical Context: Arch Linux, established in 2002, introduced a "Rolling Release" philosophy, ensuring continuous updates with the latest software. Its flexibility attracted a community of advanced users.
Characteristics: Arch-based distributions are characterized by their minimalism, simplicity, and high degree of customization. They are entirely free. They use the Pacman package manager for software management.
Examples: Manjaro, Antergos (which is no longer actively maintained), and other Arch derivatives.

These distribution groups offer users a diverse range of choices. Debian-based distributions are typically user-friendly and entirely free, well-suited for beginners, and known for their vast software repositories. Red Hat-based distributions include both paid (RHEL) and free (CentOS, Fedora) options and cater to the corporate world, emphasizing reliability and long-term support. Arch-based distributions are entirely free and attract those who seek a do-it-yourself approach with constant access to the latest software.

Top 10 Linux commands for collecting system and hardware information:

For Debian-based Distributions:

uname -a: Displays detailed information about the system, including the kernel version, hostname, and architecture.
lscpu: Provides comprehensive information about the CPU, including its architecture, number of cores, and clock speed.
lsblk: Lists block devices and provides details about storage devices, partitions, and mount points.
lspci: Shows information about the PCI devices connected to the system, such as graphics cards and network adapters.
lsusb: Displays a list of USB devices and their details, including vendor and product IDs.
free -h: Shows the system's memory usage, including total, used, and available memory.
df -h: Lists the disk usage and available space on mounted file systems.
top: Provides a dynamic, real-time view of system processes, CPU usage, and memory usage. Press q to exit.
ifconfig: Displays network interface information, including IP addresses, MAC addresses, and network configuration.
lsmod: Lists loaded kernel modules, important for hardware drivers and system functionality.

For Red Hat-based Distributions:

uname -a: Displays detailed information about the system, including the kernel version, hostname, and architecture.
lscpu: Provides comprehensive information about the CPU, including its architecture, number of cores, and clock speed.
lsblk: Lists block devices and provides details about storage devices, partitions, and mount points.
lspci: Shows information about the PCI devices connected to the system, such as graphics cards and network adapters.
lsusb: Displays a list of USB devices and their details, including vendor and product IDs.
free -h: Shows the system's memory usage, including total, used, and available memory.
df -h: Lists the disk usage and available space on mounted file systems.
top: Provides a dynamic, real-time view of system processes, CPU usage, and memory usage. Press q to exit.
ifconfig: Displays network interface information, including IP addresses, MAC addresses, and network configuration.
lsmod: Lists loaded kernel modules, important for hardware drivers and system functionality.

For Arch-based Distributions:

uname -a: Displays detailed information about the system, including the kernel version, hostname, and architecture.
lscpu: Provides comprehensive information about the CPU, including its architecture, number of cores, and clock speed.
lsblk: Lists block devices and provides details about storage devices, partitions, and mount points.
lspci: Shows information about the PCI devices connected to the system, such as graphics cards and network adapters.
lsusb: Displays a list of USB devices and their details, including vendor and product IDs.
free -h: Shows the system's memory usage, including total, used, and available memory.
df -h: Lists the disk usage and available space on mounted file systems.
top: Provides a dynamic, real-time view of system processes, CPU usage, and memory usage. Press q to exit.
ifconfig: Displays network interface information, including IP addresses, MAC addresses, and network configuration.
lsmod: Lists loaded kernel modules, important for hardware drivers and system functionality.

Additional tips:

Start with a user-friendly distribution like Ubuntu or Linux Mint. These distributions are designed to be easy to use and come with a wide range of software pre-installed.
Don't be afraid to experiment. Linux is a very forgiving operating system, and it's easy to recover from mistakes.
Use the online community to your advantage. There are many forums and websites where you can ask questions and get help from other Linux users.
Don't be afraid to break things. The best way to learn Linux is by doing. If you break something, you can always reinstall your distribution or ask for help.

Learning Linux can take some time and effort, but it is a rewarding experience. Linux is a powerful and versatile operating system that can be used for a wide range of tasks, from personal computing to web development to server administration. With the help of the online community, anyone can learn Linux and start taking advantage of its many benefits.

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Automating Active Directory Deployment on Windows Server 2022 using PowerShell Script

Emir K. — Tue, 15 Aug 2023 13:35:23 +0000

Introduction:
In the world of modern networking and system administration, the effective management of users, computers, and resources is essential for maintaining a secure and organized infrastructure. This guide will lead you through the process of automating the deployment of Active Directory (AD) on a Windows Server 2022 using a powerful PowerShell script. Windows Server 2022 stands as the pinnacle of Microsoft's server operating systems, boasting enhanced security features, improved performance, and advanced administrative capabilities. Within this framework, Active Directory serves as a fundamental pillar, providing centralized identity and access management for enterprises and organizations.

Understanding Active Directory (AD):
Active Directory is a comprehensive directory service developed by Microsoft, designed to facilitate the management of network resources and streamline user administration. It functions as a repository of critical information about users, computers, groups, and other network entities. Beyond its core function of authentication and authorization, AD enables the creation of a hierarchical structure that mirrors an organization's real-world structure. This structure, referred to as the domain hierarchy, allows administrators to manage and enforce security policies, deploy software, and facilitate resource sharing efficiently.

Key Benefits of Active Directory:
Active Directory brings a multitude of benefits to organizations, including:

Centralized Management: AD offers a centralized platform for managing users, groups, computers, and network resources. This streamlines administration and reduces the complexity of managing multiple user accounts and access rights.
Single Sign-On (SSO): With AD, users can access multiple services and applications using a single set of credentials, simplifying the authentication process and enhancing user experience.
Group Policy: AD's Group Policy feature enables administrators to enforce security settings, policies, and configurations across the network, ensuring consistent and standardized management.
Resource Sharing: AD facilitates seamless sharing of files, printers, and other resources within the organization, promoting collaboration and productivity.
Security and Access Control: AD provides robust security mechanisms, including access controls, encryption, and authentication, reducing the risk of unauthorized access and data breaches.

Prerequisites and Script Customization:
Before initiating the automated deployment of Active Directory using the PowerShell script, ensure the following prerequisites are met:

Administrative Privileges: You must have administrative privileges on the Windows Server 2022 system to execute the necessary configurations and settings.
Windows Server 2022: The script is designed specifically for Windows Server 2022. Make certain that you are utilizing the correct operating system version.
Backup: It is strongly recommended to create a backup of your system or a snapshot of your virtual machine. This precautionary measure ensures that you can revert to a previous state in case of unexpected issues.

Preparing the Script:
Before executing the PowerShell script, there are several pieces of information that you need to prepare and input into the script to customize it for your environment:

Network Variables:
$ethipaddress: Static IP address of the server.
$ethprefixlength: Subnet mask prefix length (in CIDR format, e.g., 24 for 255.255.255.0).
$ethdefaultgw: Default gateway.
$ethdns: DNS servers (you can add multiple DNS addresses separated by commas).
$globalsubnet: Global subnet used for DNS reverse lookup and Active Directory Sites and Services.
$subnetlocation: Location of the subnet for Active Directory Sites and Services.
$sitename: New name for Default-First-Site in Active Directory Sites and Services.

Active Directory Variables:
$domainname: Name of your Active Directory domain.

Remote Desktop Variable:
$enablerdp: Option to enable or disable Remote Desktop (yes or no).

Disable IE Enhanced Security Configuration Variable:
$disableiesecconfig: Option to enable or disable Internet Explorer Enhanced Security Configuration (yes or no).

Hostname Variables:
$computername: New server name.

NTP Variables:
$ntpserver1: First NTP server for time synchronization.
$ntpserver2: Second NTP server for time synchronization.

DNS Variables:
$reversezone: DNS reverse lookup zone.

Execution and Customization:
Review each variable carefully and input accurate values that align with your network configuration and preferences. Customize the script as needed, adjusting parameters to meet your specific requirements.

#--------------------------------------------------------------------------------------------------------
#- Created by:             Emir Kurtovic                                                                -
#- Version:                2.1                                                                          -
#--------------------------------------------------------------------------------------------------------
# Change Log                                                                                            -
# 18th August 2024          Added FQDN prompt for source domain controller when joining existing domain -
#--------------------------------------------------------------------------------------------------------

#-------------
#- Variables -
#-------------

# Network Variables
$ethipaddress = '10.10.100.251' # static IP Address of the server
$ethprefixlength = '24' # subnet mask - 24 = 255.255.255.0
$ethdns = '8.8.8.8','1.1.1.1' # for multiple DNS you can append DNS entries with commas
$ethdefaultgw = '10.10.100.1' # default gateway
$globalsubnet = '10.10.100.0/24' # Global Subnet will be used in DNS Reverse Record and AD Sites and Services Subnet
$subnetlocation = 'Sarajevo'
$sitename = 'Main-Site' # Renames Default-First-Site within AD Sites and Services

# Active Directory Variables
$domainname = 'elab.local' # enter your active directory domain name
$domainNetbiosName = 'ELAB' # NetBIOS name for the domain, typically a short version of the domain name

# Remote Desktop Variable
$enablerdp = 'yes' # to enable RDP, set this variable to yes. to disable RDP, set this variable to no

# Disable IE Enhanced Security Configuration Variable
$disableiesecconfig = 'yes' # to disable IE Enhanced Security Configuration, set this variable to yes. to leave enabled, set this variable to no

# Hostname Variables
$computername = 'srv-dc02' # enter your server name

# NTP Variables
$ntpserver1 = '0.ba.pool.ntp.org'
$ntpserver2 = '1.ba.pool.ntp.org'

# DNS Variables
$reversezone = '100.10.10.in-addr.arpa'

# Timestamp
Function Timestamp {
    $Global:timestamp = Get-Date -Format "dd-MM-yyy_hh:mm:ss"
}

# Log File Location
$logfile = "C:\psscript\Win_2022_AD_Deployment_logs.txt"

# Create Log File
Write-Host "-= Get timestamp =-" -ForegroundColor Green

Timestamp

IF (Test-Path $logfile) {
    Write-Host "-= Logfile Exists =-" -ForegroundColor Yellow
}
ELSE {
    Write-Host "-= Creating Logfile =-" -ForegroundColor Green
    Try {
        New-Item -Path 'C:\psscript' -ItemType Directory
        New-Item -ItemType File -Path $logfile -ErrorAction Stop | Out-Null
        Write-Host "-= The file $($logfile) has been created =-" -ForegroundColor Green
    }
    Catch {
        Write-Warning -Message $("Could not create logfile. Error: " + $_.Exception.Message)
        Break
    }
}

# Define the Disable-IEESC function
function Disable-IEESC {
    # Disable IE ESC for Administrators
    Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Active Setup\Installed Components\{A5AB5C05-5B50-421F-95D7-1F08E602371E}' -Name "IsInstalled" -Value 0 -ErrorAction SilentlyContinue

    # Disable IE ESC for Users
    Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Active Setup\Installed Components\{A5AB5C05-5B50-421F-95D7-1F08E602371F}' -Name "IsInstalled" -Value 0 -ErrorAction SilentlyContinue

    Write-Host "-= IE Enhanced Security Configuration successfully disabled for Admin and User =-" -ForegroundColor Green
}

# Check Script Progress via Logfile
$firstcheck = Select-String -Path $logfile -Pattern "1-Basic-Server-Config-Complete"

IF (!$firstcheck) {
    Write-Host "-= 1-Basic-Server-Config-Complete, does not exist =-" -ForegroundColor Yellow
    Timestamp
    Add-Content $logfile "$($Timestamp) - Starting Active Directory Script"

    ## 1-Basic-Server-Config ##
    #------------
    #- Settings -
    #------------

    # Set Network
    Timestamp
    Try {
        New-NetIPAddress -IPAddress $ethipaddress -PrefixLength $ethprefixlength -DefaultGateway $ethdefaultgw -InterfaceIndex (Get-NetAdapter).InterfaceIndex -ErrorAction Stop | Out-Null
        Set-DNSClientServerAddress -ServerAddresses $ethdns -InterfaceIndex (Get-NetAdapter).InterfaceIndex -ErrorAction Stop
        Write-Host "-= IP Address successfully set to $($ethipaddress), subnet $($ethprefixlength), default gateway $($ethdefaultgw) and DNS Server $($ethdns) =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - IP Address successfully set to $($ethipaddress), subnet $($ethprefixlength), default gateway $($ethdefaultgw) and DNS Server $($ethdns)"
    }
    Catch {
        Write-Warning -Message $("Failed to apply network settings. Error: " + $_.Exception.Message)
        Break
    }

    # Set RDP
    Timestamp
    Try {
        IF ($enablerdp -eq "yes") {
            Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Terminal Server' -name "fDenyTSConnections" -Value 0 -ErrorAction Stop
            Enable-NetFirewallRule -DisplayGroup "Remote Desktop" -ErrorAction Stop
            Write-Host "-= RDP Successfully enabled =-" -ForegroundColor Green
            Add-Content $logfile "$($Timestamp) - RDP Successfully enabled"
        }
    }
    Catch {
        Write-Warning -Message $("Failed to enable RDP. Error: " + $_.Exception.Message)
        Break
    }

    IF ($enablerdp -ne "yes") {
        Write-Host "-= RDP remains disabled =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - RDP remains disabled"
    }

    # Disable IE Enhanced Security Configuration
    Timestamp
    Try {
        IF ($disableiesecconfig -eq "yes") {
            Disable-IEESC
            Add-Content $logfile "$($Timestamp) - IE Enhanced Security Configuration successfully disabled for Admin and User"
        }
    }
    Catch {
        Write-Warning -Message $("Failed to disable IE Security Configuration. Error: " + $_.Exception.Message)
        Break
    }

    If ($disableiesecconfig -ne "yes") {
        Write-Host "-= IE Enhanced Security Configuration remains enabled =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - IE Enhanced Security Configuration remains enabled"
    }

    # Set Hostname
    Timestamp
    Try {
        Rename-Computer -ComputerName $env:computername -NewName $computername -ErrorAction Stop | Out-Null
        Write-Host "-= Computer name set to $($computername) =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - Computer name set to $($computername)"
    }
    Catch {
        Write-Warning -Message $("Failed to set new computer name. Error: " + $_.Exception.Message)
        Break
    }

    # Enable cryptography algorithms compatible with Windows NT 4.0
    Timestamp
    Try {
        Set-ItemProperty -Path 'HKLM:\System\CurrentControlSet\Control\Lsa\FipsAlgorithmPolicy' -Name 'EnableNT4Cryptography' -Value 1 -ErrorAction Stop
        Write-Host "-= Enabled NT4-compatible cryptography algorithms =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - Enabled NT4-compatible cryptography algorithms"
    }
    Catch {
        Write-Warning -Message $("Failed to enable NT4-compatible cryptography algorithms. Error: " + $_.Exception.Message)
        Break
    }

    # Add first script complete to logfile
    Timestamp
    Add-Content $logfile "$($Timestamp) - 1-Basic-Server-Config-Complete, starting script 2 =-"

    # Enable FIPS-compliant algorithms
    Timestamp
    Try {
        Write-Host "-= Enabling FIPS-compliant algorithms =-" -ForegroundColor Yellow
        $fipsPolicyValue = "Enabled"
        $fipsPolicyPath = "HKLM:\SYSTEM\CurrentControlSet\Control\Lsa\FipsAlgorithmPolicy"
        Set-ItemProperty -Path $fipsPolicyPath -Name "Enabled" -Value $fipsPolicyValue -ErrorAction Stop
        Write-Host "-= FIPS-compliant algorithms enabled successfully =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - FIPS-compliant algorithms enabled successfully"
    }
    Catch {
        Write-Warning -Message $("Failed to enable FIPS-compliant algorithms. Error: " + $_.Exception.Message)
        Break
    }

    # Reboot Computer to apply settings
    Timestamp
    Write-Host "-= Save all your work, computer rebooting in 30 seconds =-" -ForegroundColor White -BackgroundColor Red
    Sleep 30

    Try {
        Restart-Computer -ComputerName $env:computername -ErrorAction Stop
        Write-Host "-= Rebooting Now!! =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - Rebooting Now!!"
        Break
    }
    Catch {
        Write-Warning -Message $("Failed to restart computer $($env:computername). Error: " + $_.Exception.Message)
        Break
    }

} # Close 'IF (!$firstcheck)'

# Check Script Progress via Logfile
$secondcheck1 = Get-Content $logfile | Where-Object { $_.Contains("1-Basic-Server-Config-Complete") }

IF ($secondcheck1) {
    $secondcheck2 = Get-Content $logfile | Where-Object { $_.Contains("2-Build-Active-Directory-Complete") }

    IF (!$secondcheck2) {

        ## 2-Build-Active-Directory ##

        # Domain Operation Variable
        $domainAction = Read-Host "Enter 'new' to create a new domain or 'join' to add this server to an existing domain"

        # Prompt for the DSRM password
        $dsrmpassword = Read-Host "Enter Directory Services Restore Password" -AsSecureString

        # If joining an existing domain, prompt for the IP address of the primary AD and credentials
        $primaryADIP = $null
        $sourceDomainControllerFQDN = $null
        $domainCreds = $null
        IF ($domainAction -eq "join") {
            $primaryADIP = Read-Host "Enter the IP address of the primary AD domain controller"
            $sourceDomainControllerFQDN = Read-Host "Enter the fully qualified DNS name (FQDN) of the source domain controller"

            # Set DNS to point to the primary AD controller
            Set-DnsClientServerAddress -InterfaceIndex (Get-NetAdapter).InterfaceIndex -ServerAddresses $primaryADIP

            # Test connectivity to the primary AD
            IF (-not (Test-Connection -ComputerName $primaryADIP -Count 2 -Quiet)) {
                Write-Host "Unable to reach the primary AD domain controller at $primaryADIP" -ForegroundColor Red
                Break
            }

            # Prompt for domain admin credentials
            $domainCreds = Get-Credential -Message "Enter the credentials for a domain account with permissions to add a domain controller"
        }

        Timestamp
        Try {
            Write-Host "-= Active Directory Domain Services installing =-" -ForegroundColor Yellow
            Install-WindowsFeature -name AD-Domain-Services -IncludeManagementTools
            Write-Host "-= Active Directory Domain Services installed successfully =-" -ForegroundColor Green
            Add-Content $logfile "$($Timestamp) - Active Directory Domain Services installed successfully"
        }
        Catch {
            Write-Warning -Message $("Failed to install Active Directory Domain Services. Error: " + $_.Exception.Message)
            Break
        }

        # Configure Active Directory Domain Services
        Timestamp
        Try {
            IF ($domainAction -eq "new") {
                Write-Host "-= Creating new domain =-" -ForegroundColor Yellow
                Install-ADDSForest -DomainName $domainname -DomainNetbiosName $domainNetbiosName -InstallDNS -SafeModeAdministratorPassword $dsrmpassword -Confirm:$false | Out-Null
                Write-Host "-= New domain created successfully =-" -ForegroundColor Green
                Add-Content $logfile "$($Timestamp) - New domain created successfully"
            }
            ELSEIF ($domainAction -eq "join") {
                Write-Host "-= Joining existing domain =-" -ForegroundColor Yellow
                Install-ADDSDomainController -DomainName $domainname -InstallDNS -SafeModeAdministratorPassword $dsrmpassword -Credential $domainCreds -Confirm:$false -ReplicationSourceDC $sourceDomainControllerFQDN | Out-Null
                Write-Host "-= Server added to existing domain successfully =-" -ForegroundColor Green
                Add-Content $logfile "$($Timestamp) - Server added to existing domain successfully"
            }
            ELSE {
                Write-Host "-= Invalid option selected. Exiting... =-" -ForegroundColor Red
                Break
            }
        }
        Catch {
            Write-Warning -Message $("Failed to configure Active Directory Domain Services. Error: " + $_.Exception.Message)
            Break
        }

        # Add second script complete to logfile
        Timestamp
        Add-Content $logfile "$($Timestamp) - 2-Build-Active-Directory-Complete, starting script 3 =-"

        # Reboot Computer to apply settings
        Write-Host "-= Save all your work, computer rebooting in 30 seconds =-" -ForegroundColor White -BackgroundColor Red
        Sleep 30

        Try {
            Restart-Computer -ComputerName $env:computername -ErrorAction Stop
            Write-Host "Rebooting Now!!" -ForegroundColor Green
            Add-Content $logfile "$($Timestamp) - Rebooting Now!!"
        }
        Catch {
            Write-Warning -Message $("Failed to restart computer $($env:computername). Error: " + $_.Exception.Message)
            Break
        }

    } # Close 'IF (!$secondcheck2)'
} # Close 'IF ($secondcheck1)'

# Add second script complete to logfile

# Check Script Progress via Logfile
$thirdcheck = Get-Content $logfile | Where-Object { $_.Contains("2-Build-Active-Directory-Complete") }

## 3-Build-Active-Directory ##

#------------
#- Settings -
#------------

# Add DNS Reverse Record
Timestamp
Try {
    Add-DnsServerPrimaryZone -NetworkId $globalsubnet -DynamicUpdate Secure -ReplicationScope Domain -ErrorAction Stop
    Write-Host "-= Successfully added in $($globalsubnet) as a reverse lookup within DNS =-" -ForegroundColor Green
    Add-Content $logfile "$($Timestamp) - Successfully added $($globalsubnet) as a reverse lookup within DNS"
}
Catch {
    Write-Warning -Message $("Failed to create reverse DNS lookups zone for network $($globalsubnet). Error: "+ $_.Exception.Message)
    Break
}

# Add DNS Scavenging
Write-Host "-= Set DNS Scavenging =-" -ForegroundColor Yellow

Timestamp
Try {
    Set-DnsServerScavenging -ScavengingState $true -ScavengingInterval 7.00:00:00 -Verbose -ErrorAction Stop
    Set-DnsServerZoneAging $domainname -Aging $true -RefreshInterval 7.00:00:00 -NoRefreshInterval 7.00:00:00 -Verbose -ErrorAction Stop
    Set-DnsServerZoneAging $reversezone -Aging $true -RefreshInterval 7.00:00:00 -NoRefreshInterval 7.00:00:00 -Verbose -ErrorAction Stop
    Add-Content $logfile "$($Timestamp) - DNS Scavenging Complete"
}
Catch {
    Write-Warning -Message $("Failed to DNS Scavenging. Error: "+ $_.Exception.Message)
    Break
}

Get-DnsServerScavenging

Write-Host "-= DNS Scavenging Complete =-" -ForegroundColor Green

# Create Active Directory Sites and Services
Timestamp
Try {
    New-ADReplicationSubnet -Name $globalsubnet -Site "Default-First-Site-Name" -Location $subnetlocation -ErrorAction Stop
    Write-Host "-= Successfully added Subnet $($globalsubnet) with location $($subnetlocation) in AD Sites and Services =-" -ForegroundColor Green
    Add-Content $logfile "$($Timestamp) - Successfully added Subnet $($globalsubnet) with location $($subnetlocation) in AD Sites and Services"
}
Catch {
    Write-Warning -Message $("Failed to create Subnet $($globalsubnet) in AD Sites and Services. Error: "+ $_.Exception.Message)
    Break
}

# Rename Active Directory Site
Timestamp
Try {
    Get-ADReplicationSite Default-First-Site-Name | Rename-ADObject -NewName $sitename -ErrorAction Stop
    Write-Host "-= Successfully renamed Default-First-Site-Name to $sitename in AD Sites and Services =-" -ForegroundColor Green
    Add-Content $logfile "$($Timestamp) - Successfully renamed Default-First-Site-Name to $sitename in AD Sites and Services"
}
Catch {
    Write-Warning -Message $("Failed to rename site in AD Sites and Services. Error: "+ $_.Exception.Message)
    Break
}

# Add NTP settings to PDC

Timestamp

$serverpdc = Get-AdDomainController -Filter * | Where-Object {$_.OperationMasterRoles -contains "PDCEmulator"}

If ($serverpdc) {
    Try {
        Start-Process -FilePath "C:\Windows\System32\w32tm.exe" -ArgumentList "/config /manualpeerlist:$($ntpserver1),$($ntpserver2) /syncfromflags:MANUAL /reliable:yes /update" -ErrorAction Stop
        Stop-Service w32time -ErrorAction Stop
        sleep 2
        Start-Service w32time -ErrorAction Stop
        Write-Host "-= Successfully set NTP Servers: $($ntpserver1) and $($ntpserver2) =-" -ForegroundColor Green
        Add-Content $logfile "$($Timestamp) - Successfully set NTP Servers: $($ntpserver1) and $($ntpserver2)"
    }
    Catch {
        Write-Warning -Message $("Failed to set NTP Servers. Error: "+ $_.Exception.Message)
    }
}

Conclusion:
Utilizing PowerShell to create an Active Directory infrastructure on Windows Server 2022 brings significant benefits in terms of speed, efficiency, and consistency of administrative tasks. Throughout this article, we've explored the basics of Windows Server 2022, Active Directory, and PowerShell, and demonstrated the steps to quickly start creating an AD domain using a PowerShell script.

This post serves as an introduction to the wide range of possibilities that Windows Server 2022 and PowerShell offer. I hope this article helps you lay the foundation for further exploration and management of your server infrastructure.

Note: Before executing any scripts or administrative tasks in a production environment, it's always important to thoroughly test and understand the consequences of your actions.

Best of luck in creating your Active Directory infrastructure on Windows Server 2022 with the help of PowerShell!

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Master Oracle Cloud Infrastructure 2025 Networking: Your Guide to the 1Z0-1124-25 Certification

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Introduction to Linux:

Linux Distribution Groups:

Debian-based Distributions:

Red Hat-based Distributions:

Arch-based Distributions:

Top 10 Linux commands for collecting system and hardware information:

Additional tips:

Automating Active Directory Deployment on Windows Server 2022 using PowerShell Script