How to set static ip..?
[root@localhost ~]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
DEVICE=eth0
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.1.13
NETMASK=255.255.255.0
TYPE=Ethernet
[root@localhost ~]#
Edit your /etc/sysconfig/network-scripts/ifcfg-eth0 file like this.
Then restart your network.
How to restart the network..?
The command for stop the network is /etc/init.d/network stop
To start the network /etc/init.d/network start
OR
[root@localhost ~]# /etc/init.d/network restart
Shutting down interface eth0: [ OK ]
Shutting down loopback interface: [ OK ]
Bringing up loopback interface: [ OK ]
Bringing up interface eth0: [ OK ]
[root@localhost ~]#
How to stop and start the firewall..?
To stop /etc/init.d/iptables stop
To start /etc/init.d/iptables start
OR
[root@localhost ~]# /etc/init.d/iptables restart
Flushing firewall rules: [ OK ]
Setting chains to policy ACCEPT: filter [ OK ]
Unloading iptables modules: [ OK ]
Applying iptables firewall rules: [ OK ]
Loading additional iptables modules: ip_conntrack_netbios_n[ OK ]
[root@localhost ~]#
How to view my networking information..?
command for to view all the networking info "ifconfig"
[root@localhost ~]# ifconfig eth0
eth0 Link encap:Ethernet HWaddr 00:16:3E:A0:00:06
inet addr:192.168.1.13 Bcast:192.168.1.255 Mask:255.255.255.0
inet6 addr: fe80::216:3eff:fea0:6/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:1046 errors:0 dropped:0 overruns:0 frame:0
TX packets:297 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:81732 (79.8 KiB) TX bytes:37712 (36.8 KiB)
Interrupt:5 Base address:0x2000
[root@localhost ~]#
How to add nameserver..?
Add your nameserver (dns) /etc/resolv.conf like this.Here Airtel dns ip is used.
[root@localhost ~]# cat /etc/resolv.conf
; generated by /sbin/dhclient-script
nameserver 203.145.184.13
search localdomain
[root@localhost ~]#
How to add Gateway and Hostname..?
open the file /etc/sysconfig/network. Then add your gateway ip. For
the hostname change the HOSTNAME line by default this line is
localhost.localdomain. Then restart your network.
[root@localhost ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=no
HOSTNAME=yourdomain.com
GATEWAY=192.168.1.1
[root@localhost ~]#
OR
route add -net 0.0.0.0 gw 192.168.1.1
How to add a service..?
Copy your service shell script file to /etc/init.d folder. To add a service.
[root@localhost ~]# chkconfig -- add servicename
To startup the service at the boot time.
[root@localhost ~]# chkconfig --level 5 servicename on