Question about VPN
How far along does your sniff show the PPTP connection is getting? It should
proceed something like:
1. CE sends a TCP sync packet to port 1723, server replies to establish the
TCP control connection
2. CE sends a PPTP start session request, server sends a PPTP start session
reply through the TCP control connection
3. CE sends a PPTP outgoing call request, server sends a PPTP outgoing call
reply through the TCP control connection
4. PPP negotiations (LCP, auth, IPCP/CCP) proceed via the tunnel (appear as
GRE packets in the trace)
5. Connection is up, encrypted IP packets now sent through the tunnel.
If it is failing at the LCP phase, make sure that LCP extensions are
disabled on the server. CE 3.0 and earlier have some issues dealing with LCP
extensions.
--
Jeff Kelley
Windows CE Networking
This posting is provided "AS IS" with no warranties, and confers no rights.
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