What occurs at the point of this ssh hang?

Darren Tucker dtucker at zip.com.au
Fri Dec 26 03:05:15 EST 2014


On Thu, Dec 25, 2014 at 10:19 AM, Neil Carlson <neil.n.carlson at gmail.com>
wrote:

> Judging from the following 'ssh -vvv' output, what process might be
> happening and causing the hang at the indicated point?
>

My guess would be reverse DNS resolution of the client's address plus
forward resolution of that address.  If you have access to the server,
running the server in debug mode (/path/to/sshd -ddd) would likely give you
a better idea.  If it is DNS timing out, setting "UseDNS no" in sshd_config
will likely help.

-- 
Darren Tucker (dtucker at zip.com.au)
GPG key 8FF4FA69 / D9A3 86E9 7EEE AF4B B2D4  37C9 C982 80C7 8FF4 FA69
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.


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