Hi, I am new to linux as well as beginner to ethical hacking.
Curruntly using Ubuntu 9.10!
I am eager to know where the hacking begins in linux? The stuff like netstat, telnet, or mail-forging or even pinging...ho do we do that in linux?

First, lets be clear that that there is a distinct difference between the term 'hacking' and 'cracking'. The tools you mention, netstat, telnet, and ping are routinely used for network and application diagnostics. They can also be used for reconnaissance. Your mention of the term mail-forging (an attack to disguise the source of an e-mail and send it to the victim) puts your question clearly in the realm of 'cracking'. These discussions are forbidden by the LQ rules: link and has been reported for moderator review.

ohho! am i supposed to post topics related to hacking here?

You're supposed to understand from the above that "hacking" the way you mean it isn't a topic for LQ. If you search the 'net for "ethical hacking" I'm sure you'll find documents to read, sites to visit and software to use. After having done that, if you have any specific questions that do not violate the LQ Rules, feel free to ask them. Do however note that questions like "how do I circumvent DRM", "how do I bypass my [schools IDS filter|institution proxy|work port restrictions]", "how do I crack a WEP key", "how do I hack OpenSSH-5.1p2" or "how do I cross-site script, remote file include, sql-inject specific-software-version-x" are questions that we do not like to see.

Thread closed.