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Iptables rules on pppoe connection. Need help forwarding / routing.

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http://www.linuxquestions.org – Hello there. I'm trying to configure Iptables and I just want to block everything but http/https. However, my connection is pppoe, so I have the ppp0 interface. Pretty much every Iptables tutorial that I found don't teach how to deal with this kind of setup. I'm forwarding the ppp0 to eth0 and I could configure the input rules and they're working. After this, I need to configure the output but nothing seems to work. The current working rules are: Code: Chain INPUT (policy ACCEPT 7858 packets, 5792K bytes)  pkts bytes target    prot opt in    out    so (HowTos)