ssh / keyless login problem

From: SA (n0td1scl0s3d_at_ntlworld.com)
Date: 07/25/05

  • Next message: Terry Browning: "Re: ssh / keyless login problem" 
    To: secureshell@securityfocus.com
Date: Mon, 25 Jul 2005 10:15:44 +0100

    Yesterday 10:19:28

    I should add that the ssh / system on the remote host is:

    ssh -ver
    OpenSSH_3.6.1p2, SSH protocols 1.5/2.0, OpenSSL 0x0090701f
    uname -a
    Linux diesel.eee.nottingham.ac.uk 2.6.5-1.358 #1 Sat May 8 09:04:50 EDT 2004
    i686 athlon i386 GNU/Linux

    Dear List,

    I am using rsync to backup my local host to a remote host over ssh. I use an
    empty passphrase key pair so that my scripts can run automatically. I am
    using the scripts and setup described here, "http://www.jdmz.net/ssh/".

    I have a strange problem:

    The first time the script runs after a long delay (ie overnight when the local
    host is turned off) ssh always asks for a password despite there being a
    valid key pair on both hosts. If I kill the script and run it again then it
    runs without asking for a password (as it should). My script needs to log in
    several times and run automatically so password free operation is essential.

    I can't see why the first time fails - my only thought is that the remote
    machine mounts my home directory over NFS and maybe this causes a problem?

    Does anyone have any suggestions as to:

    How I might solve this problem?
    How I might diagnose it? (it is hard to repeat it more than once a day)
    How I might stop ssh from asking for a password and return an error instead?
    (in which case I can get my script to handle this exception with a dummy
    login).

    Any other suggestions?

    ssh -ver
    OpenSSH_3.9p1, OpenSSL 0.9.7a Feb 19 2003
    uname -a
    Linux valium 2.6.11-1.14_FC3 #1 Thu Apr 7 19:25:50 EDT 2005 x86_64 x86_64
    x86_64 GNU/Linux

    Cheers,

    SA

    End of encapsulated message

  • Next message: Terry Browning: "Re: ssh / keyless login problem"

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