I am seeing the following problem - when clients connect through the PPTP VPN and in their configuration they check "Use default gateway on remote network" - they can browse all the sites except HTTPS sites. We are using ASL for our office firewall and NAT too and if you are not connected through the VPN you can access everything including HTTPS sites. The problem appears only when you connect through the PPTP. Any ideas what might be causing this?
Some info about our configuration:
- PPTP VPN uses 128 bit encryption and RADIUS authentication.
- PPTP pool is masqueraded with the external interface
- Packet filter rule allows PPTP pool users to access anything on any service
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