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Thread: Server ports below 1024

  1. #1
    Join Date
    Jun 2010
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    4

    Server ports below 1024

    Hi all, I have recently upgraded to 10.04 and I am trying to access my apache and sshd servers from the net but I have not succeed so far when those two are using their regular ports.
    If I change their ports to something greater than 1024 they work fine.
    80->8010
    22->4567
    (I can access the servers when I am connecting from local net: 192.168.1.0/24)
    Is this restriction build into the new kernel?
    Is there something I can do to fix this without recompiling the kernel?
    Any input is welcome
    Thank you very much,
    Andreas
    Last edited by sv1jsb; December 11th, 2010 at 03:43 PM.

  2. #2
    Join Date
    Aug 2008
    Location
    Washington DC
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    2,186
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Server ports below 1024

    This seems like something your ISP is doing. Often they restrict the standard server ports to force people to buy a commercial account if they wish run a server. The fact that you can reach the services from your internal /24 shows that the server itself is not restricting the traffic.

  3. #3
    Join Date
    Jun 2010
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    4

    Re: Server ports below 1024

    Well this isn't the case because it worked fine with karmic about a week ago.
    The problem arose when I upgraded to lucid.

    Andreas

  4. #4
    Join Date
    Aug 2008
    Location
    Washington DC
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    2,186
    Distro
    Ubuntu 11.04 Natty Narwhal

    Re: Server ports below 1024

    Quote Originally Posted by sv1jsb View Post
    Well this isn't the case because it worked fine with karmic about a week ago.
    The problem arose when I upgraded to lucid.

    Andreas
    It would have been useful information to include in your initial post, unless you just like to be vague.

    regardless, I would remove any iptables rules that you have as that might be the cause.

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