How to install and configure DHCP Server in Windows Server 2022
This Article covers how to install and configure DHCP Server in Windows Server 2022. This DHCP server will provide IP for network devices in the network.
How install DHCP Server
- Launch Server Manager
- Click on Manage and click on Add Roles and Features
- Click on Next on Before you Begin page
- Select Role based or feature-based installation and click on Next
- Select the server and click on next
- Select DHCP Server in the list of roles and click on Add Features and then click Next
- Click Next on the Features section
- Click Next on DHCP Server section
- Click Install
- When the installation finishes, you will see a yellow escalation mark beside the flag. Click on that
- Click on Complete DHCP Configuration
- Click on Next and then Close
How to configure DHCP
- Launch Server Manager
- Click on Tools and select DHCP
- Once the DHCP console opens, verify you are connected to your server and expand it
- Right Click on IPv4 and select New Scope
- New Scope Wizard will pop up, click on Next on the initial setup page
- Give a Name and Description for the scope and click Next
- Enter the Start IP Address and End IP Address
- In the second section, enter the Subnet Mask and click Next
- If you need an IP excluded, enter the specific IP or range in order for that IP to be excluded and click next
- Lease Duration, enter the duration for scope lease when IP is distributed by the server. Default is 1 day.
- Click on Yes, I want to configure these option now to configure Default Gateway, DNS Server and click next
- Default Gateway – enter the IP Address and click on Add and then Next
- Domain Name and DNS Server – In Parent domain, enter the name of your domain. Under IP address enter all the DNS Server IP in your name and click on Add and click on Next
- WINS, enter the IP address of WINS server if its in your network and then click Next
- Select Yes, I want to activate this scope now and click Next and then click on Finish
- Now under IPv4, you will see the scope running now
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APC UPS zero-day bugs can remotely burn out devices, disable power
Vulnerability
A set of three critical zero-day vulnerabilities now tracked as TLStorm could let hackers take control of uninterruptible power supply (UPS) devices from APC, a subsidiary of Schneider Electric.
The flaws affect APC Smart-UPS systems that are popular in a variety of activity sectors, including governmental, healthcare, industrial, IT, and retail.
Mitigation recommendations
- Install the patches available on the Schneider Electric website
- If you are using the NMC, change the default NMC password (“apc”) and install a publicly-signed SSL certificate so that an attacker on your network will not be able to intercept the new password. To further limit the attack surface of your NMC, refer to the Schneider Electric Security Handbook for NMC 2 and NMC 3.
- Deploy access control lists (ACLs) in which the UPS devices are only allowed to communicate with a small set of management devices and the Schneider Electric Cloud via encrypted communications.
Armis published Technical Whitepaper
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How to Uninstall a Windows Update
This article outlines how uninstall a Windows update either on a Windows Server or Desktop
Probelm
A recently installed Windows Update is causing an issue with a component of the Server / Desktop or causing a blue screen
Resolution
Uninstall the Windows Update
Note: Uninstalling the update will require a Server/Desktop Reboot
- Launch Control Panel
- Navigate to Program and Features
- On the left navigation panel, click on View Installed Updates
- Select the KB that is causing the issue and click on Uninstall
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Reset Windows Update with Script
This article will cover how to use the Windows Update Reset script to fix any Windows Update error encountered.
Problem
Windows Update is not able to update the workstation/server
Error
Windows Update has encountered an unknown error
Resolution
The batch script will automatically reset all services associated with Windows Update
SoftwareDistribution folder, BTS service, Cryptographic Services, etc.
Copy the following script into Notepad and save as WUReset.bat
Run the script as an administrator.
@ECHO OFF
echo Reset Windows Update
echo.
PAUSE
echo.
attrib -h -r -s %windir%system32catroot2
attrib -h -r -s %windir%system32catroot2*.*
net stop wuauserv
net stop CryptSvc
net stop BITS
ren %windir%system32catroot2 catroot2.old
ren %windir%SoftwareDistribution sold.old
ren "%ALLUSERSPROFILE%\Application Data\Microsoft\Network\Downloader" downloader.old
net Start BITS
net start CryptSvc
net start wuauserv
echo.
echo Task completed successfully...
echo.
PAUSE
After running this script, restart your computer and run Windows Update again.
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Windows Server 2022 Installation Guide: Step by Step
Hardware Requirements
- Processor: 1.4 GHz 64-bit processor Compatible with x64 instruction set. Supports NX and DEP, CMPXCHG16b, LAHF/SAHF, and prefetch.
- Memory/RAM: 512 MB (2GB for Server with Desktop Experience installation option). ECC (Error Correcting Code) type or similar technology, for physical host deployments
- Disk Space: Minimum 32 GB (Windows Server 2022 using the Server Core installation option).
- Network Requirements: An Ethernet adapter capable of at least 1 gigabit per second throughput. Compliant with the PCI Express architecture specification
- Additional requirements: UEFI 2.3.1c-based system and firmware that supports secure boot; Trusted Platform Module; Graphics device and monitor capable of Super VGA (1024 x 768) or higher-resolution.
Install Windows Server 2022 (Server Core)
If you want to install Windows Server 2022 using Server Core, follow the instructions in this section. Server Core is a minimal installation method that uses a Command Prompt to handle commands on the server. It’s suitable for smaller businesses that need to save space and resources.
- Power on your physical or virtual machine using the boot media you created. When prompted “Press any key to boot from CD or DVD” press any key, which is used as a launching point for installing Microsoft’s newest server operating system.
- Next, you’ll need to select a language of your choice, as well as keyboard layout preference and your time/currency settings. Click Next to get started
- Click on the Install now button to initiate the installation process for Windows Server 2022.
- In the next window, choose the Windows Server 2022 server option you want. To install server core, choose an option without the ‘Desktop Experience’. Click Next to proceed.
- Next, you need to read the License terms and agree to them for the installation process to continue by checking the “I accept all license agreements” box.
- When installing, select “Custom: Install Windows Server Operating System only” if you’re installing the OS on a fresh server. Otherwise, if upgrading from a previous version of Windows Server, choose the “Upgrade: Install Microsoft Server Operating System and keep files, settings, and applications” option.
- Select a partition to install Windows Server onto. You can optionally create a new partition or use the entire drive size. When done selecting the designated OS partition, proceed by clicking “Next.”
- The installer will begin installing the necessary system files. You’ll see when it’s completed, and the system reboots automatically.
- After a successful installation, the system should immediately reboot and prompt you for an administrator password.
- Next, you’ll be taken directly into Microsoft’s PowerShell interface, where you can begin managing your newly installed Windows Server 2022 operating system via the Server Core interface.
Install Windows Server 2022 (Desktop Experience)
If you want to install Windows Server 2022 using Server Core, follow the instructions in this section. Server Core is a minimal installation method that uses a Command Prompt to handle commands on the server. It’s suitable for smaller businesses that need to save space and resources.
- Power on your physical or virtual machine using the boot media you created. When prompted “Press any key to boot from CD or DVD” press any key, which is used as a launching point for installing Microsoft’s newest server operating system.
- Next, you’ll need to select a language of your choice, as well as keyboard layout preference and your time/currency settings. Click Next to get started
- Click on the Install now button to initiate the installation process for Windows Server 2022.
- In the next window, choose the Windows Server 2022 server option you want. To install server core, choose an option without the ‘Desktop Experience’. Click Next to proceed.
- Next, you need to read the License terms and agree to them for the installation process to continue by checking the “I accept all license agreements” box.
- When installing, select “Custom: Install Windows Server Operating System only” if you’re installing the OS on a fresh server. Otherwise, if upgrading from a previous version of Windows Server, choose the “Upgrade: Install Microsoft Server Operating System and keep files, settings, and applications” option.
- Select a partition to install Windows Server onto. You can optionally create a new partition or use the entire drive size. When done selecting the designated OS partition, proceed by clicking “Next.”
- The installer will begin installing the necessary system files. You’ll see when it’s completed, and the system reboots automatically.
- The installer will begin installing the necessary system files. You’ll see when it’s completed, and the system reboots automatically
- After a successful installation, the system will provide a GUI interface to configure the administrator password.
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Jan 2022 Windows Update breaking Hyper-V
Symptoms
The security updates rolled out on Jan 11, 2022 (KB5009586 or KB5009624) causing issues with Hyper-V. After installing the security updates, the Hyper-V host (Windows Server 2012, Windows Server 2012 R2 or Hyper-V Server 2012) can no longer be started.
Error when starting the VM
“virtual machine ‘XXXVM’ could not be started because the hypervisor is not running”
Resolution
Uninstall KB5009586 or KB5009624
To uninstall the patch, navigate to Control Panel -> Programs and Features -> View Installed Updates and select the patch to uninstall.
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