Hello Gopi,

I may be wrong I've found a lot of links about SSH version 2 but very few mentions of SSH version3.

SSH version 2 is described in RFC4253 of January 2006

http://www.ietf.org/rfc/rfc4253.txt

wikipedia doesn't mention SSH version 3.

http://en.wikipedia.org/wiki/Secure_Shell

I've found SSH version 3 mentioned here

http://charlotte.at.northwestern.edu/bef/SSHdist.html

but it reports to SSH communications website

Hope to help

Giuseppe