I am having trouble configuring PPTP traffic to passthrough the Juniper to a known-working Windows 2003 PPTP VPN server. I can't imagine this is that difficult but no guide I follow can properly show me the process. Can someone please let me know what I need to do to accomplish what should be a relatively simple procedure? I have a static mapped IP to the Windows 2003 server and currently have a policy allowing SMTP, IMAP, etc, traffic to that machine (from untrust to trust), all of which works fine. I will be happy to provide any other details as needed, and thank you very much in advance for any assistance.
In addition, per sangamc, I have executed the following commands:
set service "PPTP-47" protocol 47 src-port 2048-2048 dst-port 2048-2048
set service "PPTP-47" + tcp src-port 0-65535 dst-port 1723-1723
set service "PPTP-1723" protocol tcp src-port 0-65535 dst-port 1723-1723
I have enabled those services, as well as the GRE service, on the policy going from untrust to the mapped IP of the internal PPTP server, with no luck. Thank you very much in advance for your help.