David Wolfskill wrote:
> <...>
> This morning (in reviewing the logs from yesterday), I found a set of
> 580 such setup requests logged from Mar 20 19:30:06 - Mar 20 19:40:06
> (US/Pacific; currently 7 hrs. west of GMT/UTC), each from 204.11.235.148
> (part of a VAULT-NETWORKS netblock).  The sshd on the internal machine
> never logged anything corresponding to any of this.

Might be a SYN scan. I believe SSH will not log anything if a three-way
handshake has not been completed.

Of course, it would help if you provided ipfw logs to determine exactly
what kind of packets it was.

-- 
Tadas Miniotas
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