[pptp-server] can connect, but no ping

[Denny Schierz]

Hello pptp-server List,

  i have setting up a, a pptpd Server on Linux Kernel 2.2.19. I can
  connecting from a Win2k PC but, i can't communicate with my network
  behind the firewall Host. The Ping tells me, that:

ing: sendto: Operation not permitted
ping: wrote 192.168.100.40 64 chars, ret=-1

I've many ipchains rules (created by the Webmin Module Firewall
IPCHAINS). My Firewall has the IP 192.168.100.253
(pptpd server 192.168.100.252) and the Client becomes the IP
192.168.100.40.

My Internet Interface ist eth0 with 195.145.9.30 and the local Net
is eth1 192.168.100.0

I'm think, that this rules are the Problem:

#Do not accept packets from private class C on ext NIC
/sbin/ipchains -A input -i eth0 -s 192.168.0.0/16 -j DENY
/sbin/ipchains -A input -i eth0 -d 192.168.0.0/16 -j DENY
/sbin/ipchains -A output -i eth0 -s 192.168.0.0/16 -j DENY
/sbin/ipchains -A output -i eth0 -d 192.168.0.0/16 -j DENY

can somebody help me

thanks

-- 
with greetings
Denny Schierz                          mailto:schierz at cst-it.dyndns.org