Networking – Important file formats (Linux)

NIC Device Names

/dev/eth0, eth1, eth2, etc.

/etc/hosts

127.0.0.1 localhost localhost.localdomain

64.220.31.150 rabid rabid.adprotech.com

64.220.31.111 web-inn01 web-inn01.web-inn.com

64.220.31.100 hootie hootie.golden-hamster.com

64.220.31.240 sonofhootie sonofhootie.golden-hamster.com

/etc/sysconfig/network

NETWORKING=yes

FORWARD_IPV4=false

HOSTNAME=hostname.domain.com

GATEWAY=64.220.31.1

GATEWAYDEV=eth0

/etc/sysconfig/network-scripts/ifcfg-eth0

DEVICE=eth0

IPADDR=64.220.31.150

NETMASK=255.255.255.0

NETWORK=64.220.31.0

BROADCAST=64.220.31.255

ONBOOT=yes

Or – for DHCP hosts:

BOOTPROTO=DHCP

ONBOOT=yes

/etc/resolv.conf

search golden-hamster.com gh-interactive.com adprotech.com ip2.com

nameserver 64.220.31.150

nameserver 64.220.31.1

Restart and re-configure all network settings

/etc/rc.d/init.d/network restart

Networking – Important file formats (Solaris and Most other UNIX Flavors)

NIC Device Names

/dev/hme0 or /dev/le0, depending on the type of NIC in the system

/etc/hostname.<nic device name> (e.g. /etc/hostname.hme0)

Place the hostname of your computer, as it appears in the /etc/hosts file

/etc/defaultrouter

Place the address of your default gateway in this file.

/etc/hosts

Place an entry for your hosts in this file – The hostname in this file MUST match the hostname placed in /etc/hostname.<nic-device-name> above

Networking – Important Commands (All Unix Flavors)

View Current IP Address Settings

/sbin/route

View Routing Information

/sbin/route