Did you find strange addresses in the logs? What does this mean and how can I fix it?

Question

Computer networks

Been like this for a week now =(

Answer 1

The logs are on the Mikrotik router.
They rush to you from the outside through the ssh and telnet ports. They guess the password
Do you have a firewall configured?? The outside is not closed?

Answer 2

These are bots, they scan the network, find open ports and away we go.
It is recommended to change ports from the standard ones if access is needed or to close access altogether.

Answer 3

Oops, what kind of ear does telnet work for you there ? On Mikrotik? in 2018? This is, yes, the question. And the selection of passwords is bots. If I were you, I would close access to ssh from everywhere, leave it only on subnets, and for external management, put the webmort on a non-standard port ...