High NG
I hop I'm in the right group. I try to establish a vpn connection to a windows 2000 server with pptp ( high encryption). From the router ( with fixed ip ) i have a port forwarding of 1723 and GRE to a ipcop and form the ipcop i have a forwarding of these protocols to the server. Everything works fine for a short time and than - zap the connection is disconnected. I can reconnect and work further for 3 minutes. I have searched a lot in the last two days but found no solution. I have attached the protocol ( only the last lines ) of the providers packet sniffer. Can you tell me what is going wrong here ? The log on the server says that it disconnects for user demand. What is port 2853 ?
Thank you for your time and help Florian
Intergface explanation:
192.168.0.204 (ipcop extern)
213.23.130.186 (me from the internet )
Log
10/13/2005-13:59:41:IP-FILTER: I:PROTO 47 (???) pkt from 192.168.0.204
10/13/2005-13:59:41:IP-FILTER: to 213.23.130.186 accepted
10/13/2005-13:59:41:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:41:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:44:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:44:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:44:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:44:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:45:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:45:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:46:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:46:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:46:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:46:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:48:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:48:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-13:59:52:IP-FILTER: O:PROTO 47 (???) pkt from 213.23.130.186
10/13/2005-13:59:52:IP-FILTER: to 192.168.0.204 accepted
10/13/2005-14:00:00:IP-FILTER: O:PROTO 6 (TCP) pkt from
213.23.130.186/2853
10/13/2005-14:00:00:IP-FILTER: to 192.168.0.204/1723 accepted, ACK
Flag
10/13/2005-14:00:00:IP-FILTER: I:PROTO 6 (TCP) pkt from
192.168.0.204/1723
10/13/2005-14:00:00:IP-FILTER: to 213.23.130.186/2853 accepted, No
SYN/ACK
Flags, RST Flag