Re: Working out a OS X 10.4 Tiger ssh implementation issue, slow logins

From: Brendan Kwolek (bkwolek_at_nygh.on.ca)
Date: 06/07/05

  • Next message: Marcelo de Souza: "Fwd: SSH.com client / OpenSSH server / RSA key auth" 
    To: Scott Haneda <lists@newgeo.com>
Date: Mon, 06 Jun 2005 20:02:44 -0400

    Blatantly stolen from http://www.macosxhints.com

    After upgrading to Tiger, I noticed an infuriatingly long delay when
    trying to connect to remote hosts via SSH in Terminal.

    After some poking around, I finally figured out that SSH under 10.4 is
    checking for IPv6 addresses as well as IPv4 addresses, and is hanging
    until its search times out. The solution is simple:
    Open up Terminal

    Edit the /etc/ssh_config file as root (note this is
    not /etc/sshd_config). Just type sudo emacs /etc/ssh_config; replace
    emacs with your favorite editor

    Add the following line to the file:
    AddressFamily inet
    Save and close the file. Under emacs this is done via Control-X
    Control-C Y

    Or, if you're uneasy about putting it into the config file for the
    entire box, you could put it into ~/.ssh/config

    YMMV, but it did work here, and from what I read, worked for many
    others

    B

    ----- Original Message -----
    From: Scott Haneda <lists@newgeo.com>
    Date: Monday, June 6, 2005 4:04 pm
    Subject: Re: Working out a OS X 10.4 Tiger ssh implementation issue,
    slow logins

    > on 6/6/05 9:22 AM, David Benfell at benfell@parts-unknown.org wrote:
    >
    > > On Sat, 04 Jun 2005 16:20:28 -0700, Scott Haneda wrote:
    > >>
    > >> There are scattered reports, and various solutions to an issue
    > where ssh
    > >> logins take in excess of 30 seconds to instantiate a connection
    > to a remote
    > >> host. There are various workarounds, but there is no consensus.
    > >>
    > > <snip>
    > >>
    > >> debug3: Trying to reverse map address ip.add.re.ss.
    > >>
    > > <snip>
    > >
    > >> If I change to my own recursive resolver, the problem does go
    away.
    > >> However, this was not needed in 10.2 or 10.3 OS X. So in some
    > ways, it does
    > >> seem to be DNS related, but I am not sure just exactly where.
    > >>
    > > <snip>
    > >
    > > I just compared the man pages for sshd_config from a 10.3 system
    > and a
    > > 10.4 system. In the 10.4 system, the VerifyReverseMapping
    > option is
    > > missing. I would suggest adding this option with an argument of
    No.
    >
    > Isnt sshd_config for the remote server end of the deal, not the
    > client side,
    > which is what is hanging?
    > --
    > -------------------------------------------------------------
    > Scott Haneda Tel: 415.898.2602
    > <" target="l">http://www.newgeo.com> Novato,
    > CA U.S.A.
    >
    >
    >
    >

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