[CentOS] long delay when logging in

Wed Nov 16 23:15:50 UTC 2016
John R Pierce <pierce at hogranch.com>

On 11/16/2016 3:07 PM, Larry Martell wrote:
> I have a CentOS 7 system and when I login with putty or ssh there is a
> long delay before I get the password prompt. I ran ssh -v and I found
> that it gets up to this:
> debug1: ssh_ecdsa_verify: signature correct
> debug1: SSH2_MSG_NEWKEYS sent
> debug1: expecting SSH2_MSG_NEWKEYS
> debug1: SSH2_MSG_NEWKEYS received
> debug1: SSH2_MSG_SERVICE_ACCEPT received
> and then it sits there for 1-2 minutes and then this output blasts out:

wild guess says someone is doing a reverse DNS lookup thats timing out.

john r pierce, recycling bits in santa cruz