Wednesday, February 15, 2012

Defending Brute Force SSH Attacks

Rainer Wichmann gives a nice rundown on Defending against brute force ssh attacks:


During 2005, bute force attacks on the ssh (secure shell) service became pretty popular. These attacks are based on a rather simple idea: use an automated program for trying, one after the other, many combinations of standard or frequently used account names and likewise frequently used password (e.g.: guest/guest).


There are a number of methods to defend against such brute force attacks. The following list is intended to give an overview of them, and briefly mention their respective advantages and disadvantages.

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