Zitat von Mart Frauenlob <mart.frauenlob@xxxxxxxxx>:
Even if the modules are loaded, you need to allow the first gre
packet as you pointed out above.
At least on my system it's sufficient that I load conntrack_pptp. With
the following rules I can then create a pptp connection:
-P INPUT DROP
-P FORWARD DROP
-P OUTPUT ACCEPT
-A INPUT -i lo -j ACCEPT
-A INPUT -m conntrack --ctstate RELATED,ESTABLISHED -j ACCEPT
I do not need to explicitly allow any gre traffic for the pptp vpn to work.
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