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How to forward packets between two dedicated servers?

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Special Forums IP Networking How to forward packets between two dedicated servers?
# 1  
Old 11-03-2013
How to forward packets between two dedicated servers?
Hi,

Simple question, how to make one dedicated server as a router to forward traffic on second? Both of them running on CentOS.
# 2  
Old 11-07-2013
Any host with 2 nics and ipforwarding is a router. The trick is getting the routes distributed, which means running a compatible routing protocol daemon. You can just install routes where they are needed, too, but for global traffic, these have to be shared out through the routers. Sometimes this is a security concern with the outer layers.
# 3  
Old 11-08-2013
Assuming your router system has two NICs installed, cabled correctly, and operational.
Code:
# echo 1 > /proc/sys/net/ipv4/ip_forward

to enable routing.

You can then use the
Code:
# ip route ...

command to manipulate the routing tables.

There are lots of detailed tutorials available on the Internet.
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