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Manual Configuration to setup Linux Server

Manual Configuration


You can use one of the above tools or configure the network the old fashioned way as follows:
  1. First to use networking on any permanent basis you should setup the file /etc/sysconfig/network similar to the example shown below.
  2. Assign an ip address with "ifconfig eth0 192.168.1.100 netmask 255.255.255.0 up".
  3. Tell your machine that a hub is ready for information with the command "route add -net 192.168.0.0 netmask 255.255.255.0 eth0"
  4. To contact hosts outside your network if a machine with IP address 192.168.1.1 is the gateway use the command "route add default gw 192.168.1.1 eth0"
  5. If using a dialup connection use the command "route add default ppp0" The word default says if the packet is not for a machine on your local network, send it to the default device.
These settings are not permanent, but go away the next time you boot. They are normally set up in the directory /etc/sysconfig/network-scripts. Add the network interface to the file /etc/sysconfig/network-scripts/ifcfg-eth*. For example the file ifcfg-eth0 if for the first ethernet interface, ifcfg-eth1 for the second, ifcfg-lo is for the local interface. An example file from my system is:





DEVICE="eth0"




IPADDR="192.168.1.100"


NETMASK="255.255.0.0"


="none"
IPXN


ONBOOT="yes"
BOOTPROT
OETNUM_802_2=""


="no"
IPXACTIVE_802_2


IPXPRIMARY_802_
2="no"
IPXNETNUM_802_3=""


CTIVE_802_3="no"
IPXN


IPXPRIMARY_802_3="no"
IPX
AETNUM_ETHERII=""
IPXPRIMARY_ETHERII="no"


PXPRIMARY_SNAP="no"
IP


IPXACTIVE_ETHERII="no"
IPXNETNUM_SNAP=""



IXACTIVE_SNAP="no"
Unless you know what you're doing it is best to use a network configuration tool. I cannot guarantee the accurateness of how to set these files up on your system.
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