GRE protocol recognition?

Discussion in 'Port Explorer' started by Tuggboat, Nov 11, 2004.

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  1. Tuggboat

    Tuggboat Registered Member

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    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
     
  2. Tuggboat

    Tuggboat Registered Member

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

    frogfoot Registered Member

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    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
     
  4. Pilli

    Pilli Registered Member

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    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
     
  5. boo

    boo Guest

    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.
     
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