GRE protocol recognition?

When I look at my open ports on my firewall (outpost 2.5) it says i have a local port 12032 open for GRE protocol. Port explorer doesnt report this? Should I configure something differently? Or is it not supported? The process; SYSTEM is using it and local address says; any.

Thanks

 

I've tracked it down a bit more. Its part of my wireless networking.

 

I have the same issue, GRE protocol not showing up (event when including NETSTAT sockets). Is there a reason why these connections are not shown?
Tom

 

I guess this protocol is not included because it is a standard applied to P2P tunnelling and not specifically for the Inernet.
http://support.microsoft.com/?kbid=241251
I am not sure of the technical reasons for not having it in Port Explorer but maybe Jason or one of ther other experts will explain

HTH Pilli

 

GRE is an encapsulation datagram like SSH tunneling. GRE doesn't have the concept of ports. It's a Microsoft protocol generally used with PPTP, otherwise known as VPN (Virtual Private Networks). I haven't seen this protocol used for anything else.