Broadcast protocols NetBIOS over TCP/IP, LLMNR, and mDNS (Multicast DNS) are used to resolve names in Windows networks where there is no (unavailable) DNS server (typically, these are home or SOHO networks). These protocols are usually not needed in corporate networks with DNS servers. In addition, these broadcast protocols are not secure and can easily be used by attackers to implement spoofing, relay, and MITM attacks, which can intercept user credentials on the local subnet (including NTLM hashes). Let’s look at how to disable the LLMNR, NetBIOS, and mDNS protocols on a Windows network, either manually or via GPO.
Windows Server: Administration Guides
Step-by-step tutorials and comprehensive courses covering Windows Server installation, configuration, administration, and management. Learn to deploy server roles, manage Active Directory, configure networking, automate tasks with PowerShell, and implement security best practices for Windows Server 2012, 2016, 2019, and 2022 editions. Ideal for beginners and IT professionals seeking practical, hands-on knowledge to master Windows Server environments.
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Group Policy (GPO) Guides for Admins
Clear, concise tutorials on creating and managing Group Policy Objects to control user and computer settings, enforce security, and streamline network administration in Active Directory environments.
- Configuring Firewall Rules With Group Policy
- How to Copy Files or Folders to All Computers with GPO
- Updating Group Policy Administrative Templates (ADMX) Files
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- How to Detect the Source of Account Lockout in Active Directory
- Adding an Additional Domain Controller To an Existing AD Domain
- Active Directory Health Check
- Get-ADDomainController: How to Get Domain Controller Information with Powershell
- How to Transfer os Seize FSMO Roles in Active Directory
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- How to Extend Password Expire Date in Active Directory
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Detailed walkthroughs for installing VMware ESXi, vCenter Server, and VMware Workstation Player, including configuration of virtual machines, network settings, and storage options to optimize your virtual infrastructure.
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- Adding Sound Controller to a VMWare VM
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- Active DirectoryGroup PoliciesWindows 10Windows 11Windows Server 2019
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- ExchangePowerShell
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