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Thread: Max TCP connections (per process ?)

  1. #1
    Join Date
    Oct 2007
    Beans
    3

    Max TCP connections (per process ?)

    Hi there,

    I've been hanging around for a while, looking for a way to change this parameter.

    On several applications (MTA's), I tried to evaluate the maximum SMTP connections my box was able to handle. Well, it appears that I just can't reach the application limit because the maximum TCP connections is reached beforehand.

    This maximum remains the same : 1023. Another user, Googler, wrote about that a year ago, but he never get close to a solution that I'm aware of.

    Finally, my question is : what is (are) the parameter(s) involved in limiting the number of TCP connections at the OS level (more precisely ubuntu) ?

    Thanks !


    Note: box running Intrepid.

  2. #2
    Join Date
    Mar 2009
    Location
    Earth
    Beans
    122
    Distro
    Ubuntu 12.04 Precise Pangolin

    Re: Max TCP connections (per process ?)


  3. #3
    Join Date
    Oct 2007
    Beans
    3

    Re: Max TCP connections (per process ?)

    Yep, did it before but there's no option for number of connections. It's mainly about the connection itself.

  4. #4
    Join Date
    May 2008
    Beans
    2

    Re: Max TCP connections (per process ?)

    Quote Originally Posted by mr_meuble View Post
    Yep, did it before but there's no option for number of connections. It's mainly about the connection itself.
    ulimit -n

    then persist it in /etc/security/limits.conf

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