"If you manage a public-facing Internet server, then you probably know that your server is constantly probed and attacked by rootkits floating around the Internet. Massively distributed botnets scan thousands of servers per second for vulnerable software. Having a cluster of public-facing Internet web servers, my servers see brute force ssh and web server attacks daily. And I am a tiny operation.
"For ssh dictionary attacks, DenyHosts can be a big help..."
