What do pptp and gre ports do?

  • Thread starter Thread starter Andy
  • Start date Start date
A

Andy

What do pptp and gre ports do? Hi I created a rule (with
help) to allow users to connect to a VPN. I had create a
rule from inside to outside on ports pptp and gre (44) and
and outside to inside on just port gre, but I just want to
understand the process of why these ports where needed etc
as I need to explain this to someone....

Kind Regards

A
 
pptp = port 1723 (I think)
GRE= port (thought it was) 40.

Anyways both are needed to initiate a PPTP VPN connection. typically your
windows boxen will listen on 1723 for incoming VPN Connections. VPN traffic
is also initiated through GRE. One of the problems with PPTP though it
isn't veyr friendly to most firewall standards. Well that an weak
encryption. If you are in fact using Win2k I suggest using an IPSEC standard
for VPN traffic.
 
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