I went into the sshd_config and set the GSSAPIAuthentication to no and that did the trick. I thought I had tried that already but I must have forgot to restart sshd. Thanks for you help.
-Nate
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Winbind causes delay in login for ssh users.
I have setup a CentOS 5 Samba server that uses Winbind to authenticate with our Win2k3 server domain. I am able to authenticate with local users and with domain users. When connecting to the SMB share it doesn't take any more time than usual but when I try to use SSH it is delayed about 30 seconds. I connected to the system using the -vvv option and I see that the delay is occurring while is is attempting to access the file /tmp/krb5cc_1000 which does not exist. Here is the actual message:
debug1: Next authentication method: gssapi-with-mic
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
debug2: we did not send a packet, disable method
This message occurs not matter if the account is local or domain and no matter how I setup the the lookup in nsswitch.conf. The current config of nsswitch.conf is:
passwd: winbind files
shadow: winbind files
group: winbind files
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by: arnoldPosted on 2009-10-19 at 10:10:43ID: 25607001
You should have the settings in nsswitch.conf files then winbind.
But the GSS issue comes items are processed way before any authentication is exchanged.
http://www.derkeiler.com/M
you can change the settings within the /etc/ssh/sshd_config under Kerberros options.
uncomment the various lines and change it from yes to no. The same applies to GSSAPI.
My guess prior to adding the AD integration, the GSS and Kerberos were not attempted because of the lack of configuration option when sshd started. With those services setup, ssh includes those checks. Not sure why you see such a significant delay increase.