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

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=264600

Morgan Davis <freebsd-bugs@morgandavis.net> changed:

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--- Comment #10 from Morgan Davis <freebsd-bugs@morgandavis.net> ---
In my case, these messages are appearing as a result of ssh port probes from my
network monitoring script.

Before upgrading from 12.3 to 13.1, logs would show one entry per test:

Aug  7 13:54:19 dtl-02 sshd[54100]: Did not receive identification string from
xx.xx.xx.xx port 54996

Now in 13.1 they show two lines:

Aug  7 14:20:05 dtl-02 sshd[34173]: error: Fssh_kex_exchange_identification:
Connection closed by remote host
Aug  7 14:20:05 dtl-02 sshd[34173]: Connection closed by xx.xx.xx.xx port 51499

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