Red Hat Bugzilla – Bug 530741
"GSSAPIAuthentication yes" by default causes connection issues
Last modified: 2010-06-28 11:07:44 EDT
Let me just preface this report by saying that I'm not really sure how to make it useful, but I'll include the information I can and hopefully somebody can make something of it.
Description of problem: The default sshd_config has GSSAPIAuthentication set to yes, which seems to cause connection problems ranging from slow authentication to dropped connections.
Version-Release number of selected component (if applicable): OpenSSH_5.2p1, OpenSSL 0.9.8k-fips
How reproducible: It happened on a mostly default sshd setup when connecting from Debian Lenny to Fedora 11. Setting GSSAPIAuthentication to no makes it stop and yes makes it happen again.
Actual results: Authentication is made much slower than usual, and drop connections while authenticating are common (>50% for me)
Expected results: SSH connects and authenticates normally and speedily.
Full IRC conversation, with links to debug output: http://pastebin.mozilla.org/678786
Initial debug output: http://pastebin.mozilla.org/678787
Still works from localhost when set to yes: http://pastebin.mozilla.org/678783
Output with 'GSSAPIAuthentication no': http://pastebin.mozilla.org/678785
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