Red hat enterprise Linux the network configure.

Method #3: 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

 

Here is what I have:
- in /etc/hosts:
...
ip           xxx.my.domain xxx

- in /etc/resolv.conf
domain my.domain
search my.domain
....

- in /etc/sysconfig/network
HOSTNAME=xxx.my.domain

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.

Открываете на редактирование файл /root/.bash_profile
Переходите в конец файла.
Делаете дополнительный перевод каретки.
Добавляете в конец файла следующее

#
export http_proxy="http://192.168.0.1:8080"
export  ftp_proxy="http://192.168.0.1:8080"
export HTTP_PROXY="http://192.168.0.1:8080"
export  FTP_PROXY="http://192.168.0.1:8080"
#

Итого, весь файл будет иметь вид, весьма похожий на то, что внизу:

# .bash_profile

# Get the aliases and functions
if [ -f ~/.bashrc ]; then
        . ~/.bashrc
fi

# User specific environment and startup programs

PATH=$PATH:$HOME/bin

export PATH
unset USERNAME

#
export http_proxy="http://192.168.0.1:8080"
export  ftp_proxy="http://192.168.0.1:8080"
export HTTP_PROXY="http://192.168.0.1:8080"
export  FTP_PROXY="http://192.168.0.1:8080"
#

Сохраните файл.