ssh MacBook to Linux has Very Slow Login

Discussion in 'macOS' started by reedw, Dec 16, 2009.

  1. reedw macrumors newbie

    Dec 9, 2009
    ssh login from my 10.6.2 mac to a linux system is extremely slow -- about a minute to get the login prompts. In comparison, ssh login to the same linux machine from putty.exe on Windows XP is almost instantaneous.

    I have tried adjusting the parameters on both client and host, without much improvement. However, the "1" protocol level seems a little faster. I have setup the keys ("2" level), and that works (without need for pasword), but is still very slow.

    I installed putty from macports onto the mac. I got it to work using the "1" protocol level, but it is just as slow as from the terminal command line.

    All of the above tests were done on a local network with addresses like, so I don't think DNS is a factor.

    Anybody have any ideas why the mac is so slow.

    Thanks ... Reed
  2. ScoobyMcDoo macrumors 65816

    Nov 26, 2007
    Austin, TX
    It could still be a DNS issue. Most tcp/ip connection code, including ssh, will first try a DNS lookup even it it is in the form When it fails out of the DNS lookup, it then tries it as a numerical address.
  3. belvdr macrumors 603

    Aug 15, 2005
    No longer logging into MR
    UseDNS No
    to the sshd config files and restart the daemons.

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