Delay during ssh login in AIX box

  • thejaswi.p

    thejaswi.p - 2007-07-16

    I have faced a critical issue with ssh login , that while loging into remote machine through ssh from my AIX machine is taking huge time around 20-30 sec. Our system has automated ssh login which exits if ssh login is not happened within 5sec. I am very much bothered about this !!!!

    Is this as knows issue?? is there any fix present for this??/

    can you help me regarding this issue

    thanks in advance 

    • Gilles Pion

      Gilles Pion - 2007-09-12

      do you use X11 forwarding?

      If you don't need it, try to connect using "ssh -x" (lowercase "x" which disables X11 forwarding)
      If you need it, try to force trusted X11 forwarding with "-Y" instead of "-X"

      There is e timeout problem with the xauth command generated on the client side when untrusted X11 forwarding is active

    • jgann

      jgann - 2007-11-22

      Is your remote machine exceptionally slow? I experienced similar symptom connecting to an old 43p-150 running aix 5.3 and openssh 4.3p. When I ran truss -fp on the sshd I realized that the server code close()s every single unused filedescriptor which is roughly 64k system calls. If you are curious enough you can read the source...

      Joachim Gann

    • skupko

      skupko - 2009-09-09

      We were experiencing the same issue with slow response of the ssh client.
      The solution was to replace line in /etc/netsvc.conf


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