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2
iptables: port forwarding through VPN tunnel and INPUT chain
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I am forwarding a range of ports to a peer of a OpenVPN tunnel:
-t nat -A PREROUTING -i eth0 -p tcp --dport <start>:<end> -j DNAT --to-destination <peer-IP>
I want to filter the packets that get forwarded this way to prevent DDoS. I have implemented some rules in the mangle table and some of those rules are appended to the INPUT chain.
Question: will the INPUT chain rules apply to these packets because they're handed to the OpenVPN service or will they not be applied since they're not targeted at the host?
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