[Bug 84899] Re: SSH with GSSAPIAuthentication option on SSH servers are very slow

[Ville Ranki]

I just met problem like this. It prevented logging on to a server
completely.

Here's a log:

ssh -vvv xxx at yyy.fi
....
debug1: Authentications that can continue: publickey,gssapi-with-mic,password
debug3: start over, passed a different list publickey,gssapi-with-mic,password
debug3: preferred gssapi-keyex,gssapi-with-mic,publickey,keyboard-interactive,password
debug3: authmethod_lookup gssapi-with-mic
debug3: remaining preferred: publickey,keyboard-interactive,password
debug3: authmethod_is_enabled gssapi-with-mic
debug1: Next authentication method: gssapi-with-mic

(time passes)

debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_1000' not found

debug1: Unspecified GSS failure.  Minor code may provide more information
Credentials cache file '/tmp/krb5cc_1000' not found

debug1: Unspecified GSS failure.  Minor code may provide more
information


debug1: Unspecified GSS failure.  Minor code may provide more
information


debug2: we did not send a packet, disable method
debug3: authmethod_lookup publickey
debug3: remaining preferred: keyboard-interactive,password
debug3: authmethod_is_enabled publickey
debug1: Next authentication method: publickey
debug1: Offering RSA public key: /home/xxx/.ssh/id_rsa
debug3: send_pubkey_test
debug2: we sent a publickey packet, wait for reply
Connection closed by 12.34.56.78

After setting "GSSAPIAuthentication no" connection works fine.

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https://bugs.launchpad.net/bugs/84899

Title:
  SSH with GSSAPIAuthentication option on SSH servers are very slow

Status in Portable OpenSSH:
  New
Status in “openssh” package in Ubuntu:
  Confirmed
Status in “openssh” package in Debian:
  New

Bug description:
  Binary package hint: openssh-client

  In Feisty Fawn I noticed a very slow ssh connection to some local servers, the prompt login takes 5/6 seconds to appear.
  I solved this problem putting the option "GSSAPIAuthentication no" instead "yes" in the /etc/ssh/ssh_config file.

  SSH Version is 4.3p2-7ubuntu1

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