I have seen various posts relating to this issue but I still can't resolve this, all I want to do it to allow an XP machine to connect to a remote PPTP VPN Server.
I have a zone firewall set up on my 877 and configured "inspect pptp" and also allowed ACLs for GRE through but still get the same issue.
The PC hangs on verifying username and password, without the firewall active it goes straight in
I have the latest IOS.
Please help if possible