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IP-Forwarding

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by sudhakaran_c

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How to enable IP-Forwarding during boot time
in linux server system to configure as a router?
Is there any posibility to configure a linux workstation as a router?

5 replies

by cpfeiffe

in /etc/sysconfig/network you will have one or both of the following lines
FORWARD_IPV4=
FORWARD_IPV6=

Set them equal to yes. You will definitely have the IPV4 line and will only have the IPV6 line if you installed Linux to support IPV6 addressing.

Yes a workstation can be a router. All of the packages you need are installed.

by kevin anderson

Depending on your distribution, you could just edit /proc/sys/net/ipv4/ip_forward and change the 0 (zero) to a 1 (one).

What distribution are you using?

Routing will occur between 2 NICs automatically if IP Forwarding is enabled.

If you need to create a routing table, I found that the ROUTE man pages were a good starting point for developing my routes. Generally, you won't need to create a routing table though. If you aren't DHCP assigned one of the addresses, you may need to set a default gateway. The man pages for Route will give detailed instructions as well as notes if any are applicable for your particular distribution.

Kev.

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