What port to open?

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Guest

I am looking into setting up a VPN on my win2k server and was wondering what
port I need to open or forward on the router?

Any help would be greatly appreciated!
 
quoted from http://www.howtonetworking.com/vpnsetup.htm
Which ports need to be opened for running VPN

A: PPTP VPN uses TCP Port 1723, IP Protocol 47 (GRE); L2TP: UDP Port 1701;
IPSec: UDP Port 500, Pass IP protocol 50 and 51. Note: 47 is a protocol
number and not TCP port. The protocol name is GRE. It'll make a big
difference when configuring your firewall or router.
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