Cool Things You Can Do With Netsh

 Computers and Networking
Jan 192010
 

10. Show TCP/IP settings:
 netsh interface ip show config

09. Change network configuration:
 Netsh interface ip set address name=”Local Area Connection” source=static addr=192.168.0.10 mask=255.255.255.0 gateway=192.168.0.1 gwmetric=1

08. Use a dynamic DHCP assigned address:
 Netsh interface ip set address name=”Local Area Connection” source=dhcp

07. Change a DNS server address:
 Netsh interface ip set dns name=”Local Area Connection” source=static addr=192.168.0.2 register=none

06. Dynamically assign the DNS server address:
 netsh interface ip set dns name=”Local Area Connection” source=dhcp

05. Configure a WINS server:
 Netsh interface ip set wins name=”Local Area Connection” source=static addr=192.168.100.3

05a. To configure WINS from DHCP:
 Netsh interface ip set wins name=”Local Area Connection” source=dhcp

04. Work with other interfaces (DHCP,RAS,IAS) – Dump those settings to a file:
 netsh dump dhcp > dhcpcfg.dat
        dumps the local DHCP server’s configuration to the dhcpcfg.dat file. You can use this file in conjunction with Netsh to recreate the DHCP server.

03. Work with remote systems – set the current computer to a different system on the network:
 netsh set machine remotecomputer

02. Save the current configuration to a file:
 netsh dump interface > mycfg.dat

01. Restore network configuration from a file:
 netsh exec mycfg.dat

00. To add multiple DNS entries you need to type:
 netsh interface ip set dns name=”Wireless Network Connection” source=static addr=192.168.1.200 register=PRIMARY
 netsh interface ip add dns name=”Wireless Network Connection” addr=192.168.1.5 index=2

In Windows XP you cannot uninstall TCP/IP but you can reset it by typing:
 netsh int ip reset resetlog.txt
 netsh int ip reset c:\resetlog.txt
        This has the same effect at un-installing it and re-installing TCP/IP. For Windows XP KB299357 and for Windows 2003 KB317518.

Other Cool Commands:

Open Port In Firewall:
 netsh firewall add portopening protocol=tcp port=135 name=DCOM_TCP135

Check if the firewall is running:
 netsh firewall show state

Untested Commands:
Allow Program in Firewall:
 netsh firewall add allowedprogram program=%windir%\system32\wbem\unsecapp.exe name=UNSECAPP

Enable Service:
 netsh firewall set service RemoteAdmin enable

Robert Holland -July 03, 2004