OpenSSH Going Strong After 10 Years With Release of v5.3
An anonymous reader writes "OpenSSH is a 100% complete SSH protocol version 1.3, 1.5 and 2.0 implementation and includes sftp client and server support. It encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks. Additionally, OpenSSH provides secure tunneling capabilities and several authentication methods, and supports all SSH protocol versions. Version 5.3 marks the 10th anniversary of the OpenSSH project."
Version 2 of the SSH protocol was also developed by Tatu YlÃnen and his company SSH Communication Security. It was just that they when they made the new, improved protocol they also switched to a proprietary license with SSH v2. It took a couple of years before the OpenBSD folks had developed the open source SSH v1 code to the point where it supported all features of the SSH v2 protocol. The two implementations of v2 still aren't fully compatible on client-side stuff like key storage, but nowadays it is the proprietary SSH that is considered the odd one out.
I don't consider Tatu YlÃnen here as a bad guy. What he has given to the world free of charge is 1) the SSH v1 protocol specification, 2) the SSH v1 open source implementation, and 3) the SSH v2 protocol specification. On top of that he has managed to make a living off of the SSH v2 code, and he certainly has the right to do that.