On: Printers are spontaneously printing odd "SQL" strings

[ars]

BTW port 25 is not SSH, it's SMTP. SSH is port 22.

[penguat → ars]

Putting SSH on the open internet with port 22 means it'll be readily identified when people scan. Then they might well try to use dictionary attacks etc. - I'd advise against it simply to stop the log files filling up.

[aprescott → penguat]

If you're putting sshd on its standard port available to the Internet, why are you allowing password-based auth?