You're talking about it as if it only handles SSH authentication. It's no substitute for proper security, but it's a great mechanism for quickly dropping naugh

You're talking about it as if it only handles SSH authentication. It's no substitute for proper security, but it's a great mechanism for quickly dropping naughty traffic. Even people who practice good security have online systems that are occasionally vulnerable to zero days, or have password forms on webapps. Dropping traffic while it's still in discovery mode is a great way to frustrate automated attacks.