Hello,
Pedro Werneck a écrit :
I can't answer your question but I can point out what looks like a
serious error in your rules -- the firewall is wide open. You should
either change your default policy on the INPUT chain to DROP, or you
should append a rule "-A INPUT -j DROP".
Yes... I know that. I changed it in the hope it would fix the problem
Did it ?
It seems that your connection uses PPPoE, so my first thought is the
well-known MTU problem. What happens if you lower the MTU of you
internal hosts below 1492 ?