IIS 7.5 Not Working with Remote (External) IP

I just installed IIS 7.5 on Windows 7 Ultimate from Control Panel with Default Settings and Everything is going fine when I access the site with "localhost" or my local Ip "192.168.0.2"

But when I access from my external IP which I got from http://www.whatismyip.com/ it is not working.

Its giving me error:

Oops! Google Chrome could not connect to 117.199.144.242:82

where 82 is my port for the site.

And when I am accessing the IP without port it is taking me to Netgear Login Page because I am using Netgear Router.

So Please Help me in Solving this problem.