How to configure iptables routing?

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boo0312021-10-26 14:27:09

iptables

boo031, 2021-10-26 14:27:09

Hello.
How to configure iptables routing?
There are 2 interfaces eth0 and eth1
I need to configure routing so that users on eth0 communicate with eth1 and vice versa eth1 with eth0. Routing is necessary without restrictions, with the opening of all ports.

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1 answer(s)

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Alexander Karabanov, 2021-10-26
@karabanov

iptables is a utility for configuring the Linux netfilter firewall (by the way, it is deprecated, nft is gaining popularity instead).
Before configuring anything, you need to allow traffic between interfaces ( forwarding ).
Then add the necessary routes and make sure that there are no restrictions in the firewall.