Long Delay Before SSH Authentication
May 18th, 2007If you are experiencing a long, annoying delay when attempting to connect to a remote server via SSH – especially if you have recently noticed this problem after installing/upgrading Ubuntu Feisty – try commenting out the “GSSAPIAuthentication yes” line in your /etc/ssh/ssh_config file:
File: /etc/ssh/ssh_config
…
HashKnownHosts yes
# GSSAPIAuthentication yes
GSSAPIDelegateCredentials no
…
GSSAPIAuthentication specifies whether user authentication based on GSSAPI is allowed. Connections with GSSAPIAuthentication option enabled on non-kerberos SSH servers are very slow. If you run ssh in verbose mode you may get a “Miscellaneous failure” error message.
ssh -v -l
…
debug1: Miscellaneous failure
No credentials cache found
…
After disabling GSSAPIAuthentication, you probably won’t have to wait as long to get your login in prompt.
