You mean :-

Code:
+-----------------+               _______________           +----------------+
| Aneesh          |  Behind NAT  /              /           | Shabbir        |
| With Private ip | ----> ----> /  Internet    /----> ----> | with Public IP |
+-----------------+            /______________/             +----------------+
Actually , I used <code> tags for formatting reasons!
amanseth like this