I tried this but there is no filter option for deny ports,there is an option only for permit all and permit only... If I want deny only one port means It'll be difficult.. Anyother hope for denying port number 80
More aboutdenying ports
It'll deny by default unless you allow.
The port only opens up when you request something on a different port. You want to go to a secure website, HTTPS using port 443. The request goes out, when it comes back in port 443 is opened.