SSTP connection automaticly disconnected on TMG !


  • Hi

    I have strange problem with TMG

    in fact we decided to use vpn for changing our public and transfer all of our traffic through the vpn connection

    So we bought VPS with windows Server 2008 R2 ( virtual Private Server ) from european Country and install routing and remote  access and IIS7  for run VPN Server ( Actually SSTP VPN Server ) we also try Comodo   SSL for SSTP Vpn certificate from public root certificate Authority after all of thing I Configure SSTP VPN Server with combination of this resource ( https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=1194 , https://support.comodo.com/index.php?_m=knowledgebase&_a=viewarticle&kbarticleid=487&nav=0,1,88 , http://www.windowsecurity.com/articles/Configuring-Windows-Server-2008-Remote-Access-SSL-VPN-Server-Part2.html )

    Our Company clients are behind the TMG Server and TMG Server sharing internet with secure NET.
    On Client Computers ( Windows 7 ) I succeeded to connect to vpn server ( VPS ) on SSTP Protocol with SSTP Vpn Connection and every thing is fine and work correctly so I think this show every thing is configure correctly on our VPS ( VPN Server ).

    but  our company decided to use vpn connection on TMG Server and tmg server establish vpn connection to VPS so that the clients  behind the TMG didn't need to make vpn connection individually for connection to vps (VPN Server ) and all our company traffic transfer to vps ( VPS Server ) and reply back from it.

    Everything is Fine when I use PPTP or L2TP over IPsec ( with pre shared key ) connection on TMG for doing this job ( our company Public IP address is changed and all of our trafic trasfer to vps ( vpn server ) and reply back )

    but when I try SSTP connection on TMG instead of PPT and L2TP over Ip Sec the vpn connection is establish but I lost internet connectivity ! ( for example I lost ping ang change to request time out ! ) and after 10 second my SSTP connection automatically disconnected ! and show me reconnectivity pending !(http://www.picestoon.com/out.php/i103666_3.jpg )

    what I am do on TMG for solving this problem ?

    Thanks In Advance

    P.S : TGM rules :

    Https and all of VPN porotocl from Internal and local host are open to External


    Wednesday, April 21, 2010 12:58 PM

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