Lots of logon attempts

Hello,

My log is filling up with these logon attempts, what can I do to limit them?
log.jpg

different options:

  1. change SSH Port in “services” menu
  2. http://snurl.com/30o0h
  3. use some kind of Port-knock :slight_smile:

Many thanks. I’ll go for option nr 2, I did search the wiki, must’ve missed that entry. Thanks again!