Method # 1: Command line tool system-config-network-tuiIf you don’t have X windows GUI installed type the following command at shell prompt:
# system-config-network-tui &
(click to enlarge image) You will see text based GUI as above. Select your Ethernet card (eth0 or eth1) and hit [Enter] or [F12] special key. 
(click to enlarge image)
You can obtain IP address using DHCP or setup manually. Once IP address assigned, click on Ok button to save the changes
Method #2: Edit configuration files stored in /etc/sysconfig/network-scripts/You can configure network card by editing text files stored in /etc/sysconfig/network-scripts/ directory. First change directory to /etc/sysconfig/network-scripts/:
# cd /etc/sysconfig/network-scripts/
You need to edit / create files as follows: - /etc/sysconfig/network-scripts/ifcfg-eth0 : First Ethernet card configuration file
- /etc/sysconfig/network-scripts/ifcfg-eth1 : Second Ethernet card configuration file
To edit/create first NIC file, type command:
# vi ifcfg-eth0
Append/modify as follows:
# Intel Corporation 82573E Gigabit Ethernet Controller (Copper)
DEVICE=eth0
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:30:48:56:A6:2E
IPADDR=10.10.29.66
NETMASK=255.255.255.192
ONBOOT=yes
Save and close the file. Define default gateway (router IP) and hostname in /etc/sysconfig//network file:
# vi /etc/sysconfig/network
Append/modify configuration as follows:
NETWORKING=yes
HOSTNAME=www1.nixcraft.in
GATEWAY=10.10.29.65
Save and close the file. Restart networking:
# /etc/init.d/network restart Make sure you have correct DNS server defined in /etc/resolv.conf file:
# vi /etc/resolv.conf
Setup DNS Server as follows:
nameserver 10.0.80.11
nameserver 10.0.80.12
nameserver 202.67.222.222 Save and close the file. Now you can ping the gateway/other hosts:
$ ping 10.0.80.12
Output: PING 10.0.80.12 (10.0.80.12) 56(84) bytes of data. 64 bytes from 10.0.80.12: icmp_seq=1 ttl=251 time=0.972 ms 64 bytes from 10.0.80.12: icmp_seq=2 ttl=251 time=1.11 ms You can also check for Internet connectivity with nslookup or host command:
$ nslookup cyberciti.biz
Output: Server: 10.0.80.11 Address: 10.0.80.11#53 Non-authoritative answer: Name: cyberciti.biz Address: 75.126.43.232 You can also use host command:
$ host nixcraft.in
Output: nixcraft.in has address 75.126.43.232 nixcraft.in mail is handled by 10 mail.nixcraft.in. |
