ssh

Ssh From Hackepedia

SSH stands for "Secure Shell" and was first written by a Finnish computer scientist named Tatu Ylonen. Mr. Ylonen went on to found SSH Communications which continues developing the ssh program. The program uses both symmetric and assymetric cryptography in order to keep the OSI session layer secure from session hijacking and sniffing.

Public Key Differences

There are three versions used in SSH. One for v1 protocol, and two for v2. Which is the right one for you? Since the RSA patent has expired it is recommended by most of the OpenSSH team to stay with RSA keys since they have been around longer and are more known in terms of their strengths and weakness. for you? Since the RSA patent has expired it is recommended by most of the OpenSSH team to stay with RSA keys since they have been around longer and are more known in terms of their strengths and weakness.

The OpenSSH Fork

OpenSSH was forked from a free version of SSH 1.2.12 and shipped with the OpenBSD 2.6 system. It has gained popularity among many vendors and is shipped with their products as well. Tatu Ylonen's company took OpenSSH to court but lost.

Cool SSH Tricks

Modern SSH clients and servers allow you to do some pretty nifty tricks. The most common is X11 Port Forwarding. You can also forward arbitrary ports, and compress files when transfering them over the network (all in addition to encrypting the data). One really nifty trick is to forward FlexLM connections. Another popular trick is passphraseless key exchange.