Server has done a security policy to close the TCP, UDP protocol in addition to 80 All …

Server has done a security policy to close the TCP, UDP protocol in addition to all the 80 foreign ports, but can not access the server to visit a Web site, ask for help!

I would like to ask if the server's visit to the page or send e-mail, the need to open those ports?

TCP port 80 is already open.but do not have access to web pages, can not be prompted to resolve domain names, to find Less than a server.

Request to help us, thank you!

agreement tcp will be able to resume online.eldest, tcp crazy, of course, not the Internet.
if it could not open the page , Opened the client services.Analysis of the domain name.You need to open DNS port ah.UDP port 53.Can not resolve is not on the network.
Need to send a message tcp25 port, port tcp110 need to receive mail.Similarly, dns need to open the port UDP53 If you use the SQL database is the TCP connection so the SQL port can not be closed!