How to secure your Mikrotik router from unauthorized access through SSH
If you are using Mikrotik routers on your network with live IPs, you may have come across log messages that notify you of failed login attempts via ssh. Such messages are generated by failed unauthorized ssh attempts on your router by cybercriminals who are constantly trying to access and take down active devices in what is known as distributed denial of service attacks. Visit timigate.com for a blog post on this and others.
