Category: Networking

How to Migrate AP From One Controller to Another

Option 1: Backup the configs of the old controller Restore the configs to the new…

How to Enable GPUPDATE When Connected via OpenVPN Client

// Explanation: to prevent locking of processes, we set a proxy batch file (on_connect.bat) to…

Ubuntu 20.04: Setting Static IP Address on an Interface

Short Version # Configure networking sudo vim /etc/netplan/*.yaml ### Sample content ### network: version: 2…

Networking: Upgrading Legacy Ubiquiti Devices

Step 1: obtain the bin URL from https://www.ui.com/download/unifi/unifi-ap/uaplr Step 2: perform the upgrade rambo@kimlinux:/home/rambo# ssh…

PowerShell: Check TCP Connections of Server by Port Numbers

# Check-TCP-Connections.ps1# This function will output progress onto the console as well as returning a…

PowerShell: Check if a HostName is Resolvable on All Internal DNS Servers

# Check if servername is resolvable at all DCs$serverName="MIGRATED-SHERVER" function checkDns{ param( $serverName, $dnsServers=(Get-ADDomainController -Filter…

PowerShell: Check VLAN of Windows Machine

Le Kommand: Get-NetAdapter|select Name,VlanID Sample Outputs PS C:\Windows\system32> Get-NetAdapter|select Name,VlanIDName VlanID---- ------Ethernet 1 0 PS…

Dev Environment Technitium DNS Server

Windows: $technitiumPortableDownload="https://download.technitium.com/dns/DnsServerPortable.zip"$tempDir="C:\Temp"; $extractionDir="C:\Technitium" $destinationFile = "$tempDir\DnsServerPortable.zip"; try{[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12}catch{} New-Item -ItemType Directory -Force -Path $tempDir…

PowerShell: Scan a Subnet for Used and Unused IPs

A newer version of this script is available here. function scanForAvailableIPs{ param( $cidrBlock=$( $interfaceIndex=(Get-WmiObject -Class…

Some Useful Windows Commands to Troubleshoot Networking on Windoze

# Check this computer's trust relationship to its domain controllers$domainName="intranet.kimconnect.com"PS C:\Windows\system32> nltest /SC_QUERY:$domainNameFlags: 0Trusted DC…

Troubleshooting Issues with Inconsistent Access Certain Websites

1. Establish Baseline Collect this info when the network is healthy. It should be used…

PowerShell: DHCP Server Scope Options Editing

Occasionally, internal DNS server changes as machines are refreshed and/or decommissioned. DHCP servers should also…

PowerShell: Set DNS Servers on Localhost

Display the current DNS Server Entries PS C:\Users\KimConnect> Get-DnsClientServerAddressInterfaceAlias Interface Address ServerAddressesIndex Family-------------- --------- -------…

Overview of Microsoft Azure Networking

Private connections into Azure are either via ExpressRoute (comparable to AWS DirectConnect) or VPN. The…

Cisco Fabric Switch – MDS Zoning Template

<# What this script does: 1. Checks to see if an Internet connection via PowerShell…

Cisco VSAN: MDS Zoning Configuration for ESXi Host – Step by Step

Step 1: gather information A. VSAN Nodes Each site shall have two sets of MDS…

Configuring Virtual Storage Area Networks (VSANs)

NX-OS Overview Source: Storage Area Network (SAN) has been around for ages. During the early…

Windows 2016: NIC Teaming

Assumptions OS: Microsoft Windows Server 2016 Network Switch: Cisco Nexus 9000 NX-OS with dual supervisors,…

Default Ports for Various Common Services

Although it is recommended that these default ports be changed whenever possible to add an…

IP Helper Address

What is it and how to use it? When the DHCP Server is placed on…