Difference between revisions of "Linux Change IP Address"

Latest revision as of 15:37, 26 March 2010

Each Linux Distro handles Network Interface configuration a little differently

Debian

To change IP, Mask, & Gateway edit /etc/network/interfaces

Example:

#Primary Network Interface
iface eth0 inet static
  address     10.0.0.100
  netmask     255.255.255.0
  gateway     10.0.0.254
  network     10.0.0.0

Then run (as root/su)

/sbin/ifdown -a && /sbin/ifup -a

This restarts all interfaces

Red Hat / Fedora

GUI RedHat/Fedora has a nice GUI tool for configuring your NIC the package is called 'system-config-network'

Command Line To change IP, Mask, & Gateway edit /etc/sysconfig/networking/devices/ifcfg-<interface name>

Example: vi /etc/sysconfig/networking/devices/ifcfg-eth0

DEVICE=eth0
BOOTPROTO=none
BROADCAST=10.0.0.255
HWADDR=ff:41:06:da:66:b4
IPADDR=10.0.0.1
NETMASK=255.255.255.0
NETWORK=10.0.0.0
ONBOOT=yes
TYPE=Ethernet
USERCTL=no
PEERDNS=yes
GATEWAY=10.0.0.254
IPV6INIT=no

Gentoo

/etc/conf.d/net

BSD

/etc/rc.conf

Solaris

/etc/hostname.interface

Configuring DNS Name Servers

All Distros
DNS name servers are stored in /etc/resolv.conf

Example:

#DNS Name Servers
nameserver 10.0.0.1
nameserver 10.0.0.2

If the DNS name servers are Windows DNS servers and you can't resolve Windows Hostnames add this line to resolv.conf:

search domain.tld

where domain.tld is the fully qualified domain name of your windows AD domain.