Ubuntu Linux Configure Gateway / Default Routing IP Address

Q. How do I configure default router or gateway IP address under Ubuntu Linux / Debian Linux? How do I change default router / gateway IP under Ubuntu Linux?

A. You can easily configure default router or gateway IP address under Debian / Ubuntu Linux by editing /etc/network/interfaces network configuration file. This file defines how you configure and how your system is connected to the network.

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Ubuntu Linux Configure Default Gateway

Open /etc/network/interfaces file:
$ sudo vi /etc/network/interfaces
Set gateway using following syntax:
gateway {router-ip}
For example, set gateway to 192.168.1.254, enter:
gateway 192.168.1.254
At the end it should look like as follows:
iface eth0 inet static
address 192.168.1.1
netmask 255.255.255.0
gateway 192.168.1.254

Save and close the file. Restart networking:
$ sudo /etc/init.d/networking restart
Verify new routing is working, enter:
$ ping 192.168.1.254
$ route -n
$ host google.com

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2 comments… add one
  • john Aug 4, 2009 @ 5:05

    Dear all,

    i am using ubanto 9.04 on virtual box,i have usb internet connection,is it possible to use it with ubanto.please reply

    Regards
    john

  • dawit Aug 11, 2011 @ 5:37

    this site really to answer the need of me

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