[pptp-server] can connect, but no ping

[robert]

This definately looks like a firewall issue, at least with the ping.  Try 
going a minimal set of rules and see if you can ping.  Then try adding rules 
back until the problem reoccurs.  Yes, this is time consuming.

On Friday 17 August 2001 07:14 pm, Denny Schierz wrote:
> 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