Which port does VPN use?

Discussion in 'Home Networking' started by Dantes, Jul 16, 2003.

  1. Dantes

    Dantes Guest

    Hi

    Which port does the default VPN set up use between one Win2K PC and one
    WinXP PC.
    I belive this is the information I need for VPN passthrough on my router?

    Thanks very much

    R
     
    Dantes, Jul 16, 2003
    #1
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  2. as far as i know IPsec assigns a random port to which to connect to the
    server for actual data transfer, using IPsec over NAT is not possible
    without NAT IPSec support on the router for this reason. If it's Cisco a
    line such as 'no crypto ipsec nat-transparency udp-encapsulation' should do
    the trick but check the spec of your router first.

    --
    Nathan D Higgins

    Website: http://nathan.link9.net/
    Email: nathan[at]link9[dot]net
    Hosting: http://www.link9.net
    WAP: http://wap.link9.net
    [dot]NET: nathan[at]link9[dot]net
     
    Nathan Higgins, Jul 16, 2003
    #2
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  3. Dantes

    Dantes Guest

    Hi

    Thanks for your comments and Rob's
    I have the Netgear DG824M I was planning to get a fixed IP for my router and
    the PC and use port forwarding on the router.
    Will this work
    What security issues do I have to think about?

    Cheers

    R
     
    Dantes, Jul 16, 2003
    #3
  4. Check if your router has support for IPsec NAT first, i presume port
    forwarding could work if you do a mass port forward to the server (thousands
    of ports), this might have adverse affects on other nodes on the lan
    though.. Generally speaking you shouldnt use this method, far better to
    directly connect the internet connection to the server then use that to
    route data to the rest of the network using NAT, that way you don't have the
    hassle with port forwarding on the netgear router. To sum up, theoretically
    it will work, practially you might be tearing your hair out.

    --
    Nathan D Higgins

    Website: http://nathan.link9.net/
    Email: nathan[at]link9[dot]net
    Hosting: http://www.link9.net
    WAP: http://wap.link9.net
    [dot]NET: nathan[at]link9[dot]net
     
    Nathan Higgins, Jul 16, 2003
    #4
  5. Dantes

    Rob Morley Guest

    Why not just set it up in the DMZ?
     
    Rob Morley, Jul 16, 2003
    #5
  6. Dantes

    Dantes Guest

    Hi

    From what I can gather the router does use NAT. I understand how this works
    with a PC accessing the internet via the router, how does it work in reverse
    though?

    By setting an inbound rule for the VPN port to forward from the router to
    the PC is that not using NAT?

    Thanks again

    R
     
    Dantes, Jul 16, 2003
    #6
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