I have faced a strange problem. I have broadband internet connection with DSL type II
modem and Win XP SP2
installed in my computer. Usually I have to turn the modem on to connect LAN and then register to network with user name and password.
But now previous stapes are perfectly done and icons in taskbar shows that PC is connected with net but the browsers like IE 7, Firefox could not download any pages.
When I diagnose connection problems, it shows that, HTTP (80), HTTPS and FTP are blocked by firewall.
How could I access net again? Please tell and apology for my English.