How to forward udp port?

Question

linux

We have - a server with a white ip raised on it vpn, a device with ip - 10.0.0.4 is connected to it, the server itself has an internal ip - 10.0.0.1, I forward tcp ports via nat, I use iptables, but I don’t understand how to redirect udp port 28015, and is it even possible?

Answer 1

Same as with TCP. The only difference is that NAT cannot track UDP connections and deletes them on timeout, but this is already the concern of applications.

Answer 2

In the iptables forwarding line, replace tcp with udp