Securing SSH Using Denyhosts
SSH is a great way to remotely administer a server. However, it still has a number of issues when you open it up to the
world. The server and client communications are secure but that doesnÃƒÂ¢Ã¢â€šÂ¬Ã¢â€žÂ¢t mean the hosts involved are. Opening an SSH service
to the world allows for brute force attacks and means that the carbon interface is still the weakest link.