I’m trying to use iptables to redirect an incoming packet on eth0 to a service listening on the loopback interface. Based on this link I’m attempting to craft the following rule:
iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 80 -j REDIRECT -o lo --to-port 80
but I’m getting the errror shown below:
Can't use -o with PREROUTING
The man page explains why this can’t work:
(REDIRECT) redirects the packet to the machine itself by changing the destination IP to the primary address of the incoming interface
How can I take incoming packets and feed them to the loopback interface?
Why did you add
-o lo? That’s not necessary, doesn’t work, and isn’t even in the tutorial you linked to. Just remove it.
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