[Bug 264600] openssh: sshd spamming logs: error: Fssh_kex_exchange_identification: Connection closed by remote host

From: <bugzilla-noreply_at_freebsd.org>
Date: Thu, 22 Sep 2022 02:14:46 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264600

--- Comment #13 from Jose Luis Duran <jlduran@gmail.com> ---
I believe we should change the title to:

"openssh: spamming error logs to the console and /var/log/messages"

Or something more general like that, since other errors can also be easily
triggered:

echo "\0" | nc ssh-server 22
error: Fssh_kex_exchange_identification: banner line contains invalid
characters

echo "SSH-XXX\n" | nc ssh-server 22
error: Bad remote protocol version identification: 'SSH-XXX'

You can get more ideas from kex_exchange_identification.

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