Need to develop a Web page to run on my mobile

I have created an HTML page on my PC and I need to run it in my mobile for testing. I have deployed it in TOMCAT and I run it using http://IP ADDRESS (192.something.something.something):port/index.html

I can't access it outside my home network. I want to know do I need to add something to make it run outside my home network on other mobile phones..? I am confused.. Everything is new for me. Will appreciate any help. Thanks