This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
According to my knowledge,with out giving port no. we can't access resources(our application) in server. There is no risk at all mentioning port no. of the server. [ October 16, 2008: Message edited by: Reddy Naidu Chowdhary ]
Based on the url given I see that you are using http protocol and default port for this protocol is 80. So if you can run your webserver on this port, you can access the required page without giving the port.