Traffic not routing to the internet after arriving on tun0

davidparks21

I can ping back and forth between my two VPN endpoints (server/client configuration). But I can't get traffic to the internet.

A tcpdump on tun0 interface shows that traffic is coming in (in particular I'm doing a ping to 8.8.4.4 and I see that coming in from the remote computer).

But a tcpdump on eth0 doesn't show anything other than my ssh traffic, I never see anything to 8.8.4.4/google's dns.

I've got masquerading set up with:

iptables -t nat -A POSTROUTING -s 10.8.0.0/16 -o eth0 -j MASQUERADE

I can ping 8.8.4.4 from the server its self. No other entries in the iptables that would block it.

Any ideas?

davidparks21

Found the answer in this guide on configuring linux as a router... IP Forwarding wasn't enabled on my system...

http://www.cyberciti.biz/tips/linux-as-router-for-dsl-t1-line-etc.html

maikcat

hi there,

not enabling ip forwarding is a very common mistake
that many users do..

glad to solved your issue.

closing topic

Michael.