[pptp-server] ipchains for GRE

[Haberkorn_Klaus]

Hi there,

has anybody got an idea how to add a permanent firewall-rule
for GRE?

I'm working with Halloween Linux, and it´s not possible in Linuxconf,
neither manually in the /etc/linux/linuxconf - file,
(because an protocol entry of "47" is not beeing accepted)

The command:

ipchains -A input -p 47 -s 0/0 -d 0/0 -j ACCEPT

works fine, but has to be issued each time after starting the server.