Extremely slow authentication via SSH on FreeBSD 6.0
forrie at forrie.com
Tue Jan 1 10:24:56 PST 2008
First, thank you to others who posted about this issue.
I altered /etc/ssh/sshd_config for UseDNS no, and noticed I get the
prompt right away, however it still takes about 15 seconds after
authentication to get a shell prompt.
This is FreeBSD version: FreeBSD 6.3-PRERELEASE #7: Sat Dec 22 11:12:15
I noticed this behavior after the last system build and install. Prior
to that, I didn't see problems like this.
I don't see this problem with httpd (apache) etc.
The DNS servers my ISP provides are quickly reachable and appear to be
caching very well, so I doubt that's the issue.
Conversely, and perhaps this is a hint, the GW I log in to has this
problem, but if I log in from there to an internal system using the same
exact version of FreeBSD, I don't have any problems like this at all.
The difference being I also use internal DNS as well as /etc/hosts entries.
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