Asked a lot of people, don't have people know what is this protective mechanism or what causes it,,,,,,,,,,,

CodePudding user response:

Service up yet?

CodePudding user response:

10.16.3.231 SSHD service didn't open, may even have no,
10.18.1.99 this server has been added 10.16.5.217 public key, can be directly from 10.16.3.231 certificate login,