Network Settings

[1]	Set static IP address to the server, DHCP is not recommended if you use as a server, Change it.

[root@dlp ~]# vi /etc/sysconfig/network-scripts/ifcfg-eth0 DEVICE=eth0 HWADDR=00:50:43:00:3B:AE # change ONBOOT= yes # add lines as follows BOOTPROTO=none # this server's IP address IPADDR=10.0.0.30 # subnet mask NETMASK=255.255.255.0 TYPE=Ethernet # default gateway GATEWAY=10.0.0.1 # DNS server's IP address DNS1=10.0.0.10 IPV6INIT=no USERCTL=no [root@dlp ~]# /etc/rc.d/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@dlp ~]# chkconfig network on  [root@dlp ~]# ifconfig  eth0 Link encap:Ethernet HWaddr 00:0C:29:D8:7C:06 inet addr:10.0.0.30 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fed8:7c06/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:885 errors:0 dropped:0 overruns:0 frame:0 TX packets:743 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83054 (81.1 KiB) TX bytes:113706 (111.0 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)

[2]	Disable IPv6 if you don't need it.

[root@dlp ~]# ifconfig  eth0 Link encap:Ethernet HWaddr 00:0C:29:D8:7C:06 inet addr:10.0.0.30 Bcast:10.0.0.255 Mask:255.255.255.0 inet6 addr: fe80::20c:29ff:fed8:7c06/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:885 errors:0 dropped:0 overruns:0 frame:0 TX packets:743 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83054 (81.1 KiB) TX bytes:113706 (111.0 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 inet6 addr: ::1/128 Scope:Host UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b) [root@dlp ~]# echo "install ipv6 /bin/true" > /etc/modprobe.d/disable-ipv6.conf  [root@dlp ~]# reboot # reboot [root@dlp ~]# ifconfig  eth0 Link encap:Ethernet HWaddr 00:0C:29:D8:7C:06 inet addr:10.0.0.30 Bcast:10.0.0.255 Mask:255.255.255.0 UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:885 errors:0 dropped:0 overruns:0 frame:0 TX packets:743 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:83054 (81.1 KiB) TX bytes:113706 (111.0 KiB) lo Link encap:Local Loopback inet addr:127.0.0.1 Mask:255.0.0.0 UP LOOPBACK RUNNING MTU:16436 Metric:1 RX packets:0 errors:0 dropped:0 overruns:0 frame:0 TX packets:0 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:0 RX bytes:0 (0.0 b) TX bytes:0 (0.0 b)