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VPN connection problem

Answered VPN connection problem

  • Tuesday, January 01, 2013 2:01 PM
     
     
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    Hi everyone

    I have a TMG 2010 in my network and my clients have odd problem

    I have configured a rule below rule but still my clients are unable to connect a VPN connection from internal to external

    protocols                                   from                  to                          users

    all outbound protocols            internal           external                  all users

    if any one has any experience like this please let me know

     

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  • Tuesday, January 01, 2013 3:44 PM
     
     
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    Hi,

    the clients must be Secure NAT clients to establish the VPN connection.
    Please also check the TMG live Logging if a Firewall Policy rule denies the request.
    The TMG Server is palced behind a Frontfirewall or a Router?

    regards Marc Grote aka Jens Baier - www.it-training-grote.de - www.forefront-tmg.de - www.nt-faq.de

     
  • Tuesday, January 01, 2013 5:10 PM
     
     
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    Thank you for your time Marc

    my clients are Secure NAT clients , they have TMG server as they gateway .

    And my TMG topology is edge , it is not behind any firewall , there is only an ADSL modem and then my TMG server.

    when my clients wants to connect a VPN connection they receive errror number 691 that says your connection is not established because the port is closed .

     
  • Tuesday, January 01, 2013 5:24 PM
     
     
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    Hi,

    which type of VPN client connections have you configured (PPTP, L2TP/IPSEC / SSTP)
    The VPN client is the default VPN client from Windows or Third Party?
    Please also check the TMG live Logging if a Firewall Policy rule denies the request and tell use the results

    regards Marc Grote aka Jens Baier - www.it-training-grote.de - www.forefront-tmg.de - www.nt-faq.de

     
  • Tuesday, January 01, 2013 7:11 PM
     
     
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    Hi

    they use pptp connections to connect and they don't have any third party soft wares , they use vpn connection from windows.

    I will absolutely check TMG live logging tomorrow when I go back to work :)

    thank you


    • Edited by Sh.N Tuesday, January 01, 2013 7:12 PM
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  • Thursday, January 03, 2013 9:21 AM
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    Hi,

    Thank you for the post.

    This issue may cause by third party modem/router, please read this blog: http://blogs.technet.com/b/isablog/archive/2009/01/07/a-pptp-client-might-fail-to-connect-to-a-vpn-server-on-the-internet-through-an-isa-server-2006.aspx

    Regards,

    Nick Gu - MSFT

     
  • Saturday, January 05, 2013 11:24 AM
     
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    Thank you both for your time Marc and Nick Gu

    problem solved , it was because  PPTP filter was enable on PPTP protocol , when I disabled it , there was no problem for VPN connections.

    :) thank you

    • Marked As Answer by Sh.N Saturday, January 05, 2013 11:25 AM
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