VPN tunnel ws. Remote Desktop (Terminal client)

Discussion in 'Linux Networking' started by ck, Aug 25, 2005.

  1. ck

    ck Guest

    Hello group,

    I've set up a linux routing-server with pptp-client. Routing is
    enabled. Default route points to our firewall.

    The connection to the VPN network is established. FTP and VNC are
    working without problems.

    My problem is very curious: I connect via my Remote Desktop/Terminal
    client. I get a connection (the screen turns black) but I get no login
    dialouge. After a while an error accures: "Connection failed. Check
    network properties" (or something like that). If I connect again and
    then start another instance of the client and also connect it, the
    second instance works well.
    After that I tried to connect only one client. This worked also great
    with the instance, that got the prior connection.
    Then I closed all clients and startet a new one. I got no connection.

    I tried the same procedure from two computers. Both Windows XP prof.
    SP2. They work identicly.

    In /var/log/messages there are some lines like this:
    Aug 25 20:08:31 vpngate pptp[21695]: anon
    log[decaps_gre:pptp_gre.c:404]: buffering packet 5429 (expecting 5426,
    lost or reordered)

    But they are not written while connecting the client.

    In /var/log/firewall there are some entries, that packets were accepted
    (high log level), but no messages of dropped packets.

    Anyone has got an idea?

    Thanks in advice!

    Christian Kusenbach
    ck, Aug 25, 2005
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  2. In comp.os.linux.networking :
    Why would you need all the bloatware? Ssh allows anything + more.

    Michael Heiming, Aug 25, 2005
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  3. I didn't know you can encap ip and route over SSH?

    I like Open VPN myself.



    Llanzlan Klazmon, Aug 25, 2005
  4. Don't think you can, the remark was about all those doze remote
    admin tools. Seems over 90% of all OP seem to surround doze, I
    don't use and have no problems at all. Even if it's easy enough
    tunneling rdesktop through ssh. ;-)
    Looks good!
    Michael Heiming, Aug 25, 2005
  5. ck

    James Knott Guest

    Actually, you can built a VPN through SSH. There was even an article about
    it, in Linux Journal, a couple of years ago. However, it's not a good idea
    as you're then running TCP over TCP, which can cause performance issues.
    OpenVPN uses UDP (though if necessary, it can also use TCP) , which has the
    same performance characteristics as Ethernet or other "best effort"
    James Knott, Aug 26, 2005
  6. Actually, there's even a howto available:

    Michael Heiming, Aug 26, 2005
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