I use a non-standard port for SSH. I don’t want to delve into the whole obscurity arguments, so I will simply say that it worked very well for me for many years. I would often show people the number of attempts to access port 22 and the complete lack of attempts to access my chosen port. Recently, I have begun getting regular probes on my SSH port. Of course, it’s not difficult to discover a non-standard port, but most simply don’t. To suddenly get hit from a variety of IPs attempting to login on my “obscure” port is a little disconcerting. Some of the IPs that are probing my SSH port are not attempting ANY other ports while others look to be trying every port possible.
These things happen. I do, however, want to share a list of IPs that have been attempting to break into my SSH so here it is.