XP VPN Client / Server Port Forwarding

[lasergecko]

My uncle has an XP VPN server setup behind a router/firewall, what ports do I need to forward to the server? Which are UDP and which are TCP?

 

[AFB]

If the VPN server is behind a router, Port Mapping will need to be done on the router. Standard port usage is 1723 for PPTP. You might also need to configure your router for PPTP Passthrough. Port usage for IPSec is 500, 50-51. These ports will have to be forwarded to the VPN server's IP

http://www.onecomputerguy.com/networking/xp_vpn_server.htm