[feature suggestion] sshd should log the listening port number while logging errors/warnings

Darren Tucker dtucker at dtucker.net
Mon Jun 5 16:59:48 AEST 2023


On Mon, 5 Jun 2023 at 16:29, Yuri <yuri at rawbw.com> wrote:
> ssh_kex_exchange_identification: banner line contains invalid characters
[...]
> It would be easier to figure out where offending connections come from.

The subsequent log line from sshpkt_fatal contains the source address
and port of that connection:

$ sudo `pwd`/sshd -ddd -p 2022
[...]
kex_exchange_identification: banner line contains invalid characters
banner exchange: Connection from 127.0.0.1 port 52410: invalid format

-- 
Darren Tucker (dtucker at dtucker.net)
GPG key 11EAA6FA / A86E 3E07 5B19 5880 E860  37F4 9357 ECEF 11EA A6FA
    Good judgement comes with experience. Unfortunately, the experience
usually comes from bad judgement.


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