Network Interface Issues NIC
Check DHCP settings + assigned IP address Check Cables
Check for incorrectly uninstalled network adapters in device manager > show hidden devices then uninstall
Reset the TCP/IP stack with the following command: "netsh int IP reset" (will clear all network configuration)
If the issue is with NIC teaming this can be removed for all adapters with the command: "LbfoAdmin /Resetconfig"
Enable Ping using default network rule:
Enable the rule with powershell:
Set-NetFirewallRule -DisplayName "Core Networking Diagnostics - ICMP Echo Request (ICMPv4-In)" -Enabled True
Enable Ping / ICMP using netsh
Use the following commands to set rule on windows firewall to allow ping on server
IPv4
- netsh advfirewall firewall add rule name="ICMP Allow incoming V4 echo request" protocol="icmpv4:8,any" dir=in action=allow
IPv6
- netsh advfirewall firewall add rule name="ICMP Allow incoming V6 echo request" protocol="icmpv6:8,any" dir=in action=allow
Network info
Get password for wifi network from netsh:
Get saved networks:
- netsh wlan show profile
Get details for network with password in clear text:
- netsh wlan show profile <wifi network name> key=clear
Get services that are bound to ports:
- netstat -ano
Interface configuration
Issues with default gateway? remove unwanted routes on network interface.
Find the routes:
Get-NetRoute -AddressFamily ipv4
remove the routes with a destination prefix of 0.0.0.0 and next hop of 0.0.0.0
Remove-NetRoute -InterfaceIndex <ifindex eg 15> -DestinationPrefix "0.0.0.0/0" -NextHop "0.0.0.0" -PolicyStore Persistantstore
Remove routes to persist:
netsh interface ipv4 delete route prefix=0.0.0.0/0 interface=Ethernet0
also:
route -p delete 0.0.0.0