More locks for your SSH door
Additional ways to harden SSH access
From the developerWorks archives
Date archived: December 19, 2016 | First published: September 27, 2011
Security isn't an exact science, so the more difficulties you can put in a hacker's way, the better. This article considers how to enhance Secure Shell (SSH) access by eliminating passwords and using public/private key pairs instead. The article also explores how to recognize and block possible attacks, including brute-force and dictionary attacks, by denying server access to origins that are identified as unsafe.
This content is no longer being updated or maintained. The full article is provided "as is" in a PDF file. Given the rapid evolution of technology, some steps and illustrations may have changed.