SSH Port Change
So the basic of basic you can do to protect your server is to change the SSH port. I think we can all (well, at least most) agree that this is a basic step to setting up any server following OS installation.
- However, change port to what?
- How many digits?
- Should repeating numbers be avoided?
- Should it be different for all of your servers?
How do you keep track of the ports?
Finally, firewal or no firewall?
Firewall blocks ports not in use so maybe it can be easy for hackers to run a port scanner to find which ports are open. What if all open ports not in use are forwarded to a catch all service that does nothing? Will that improve security?
Do let me know what you think.