Well, as Thelonius says, you can set up your definition and block the TCP port 80. However, that won't guarantee an encrypted https/SSL aka port 443. For instance, if you have users in the habit of typing "https", your attempts to block the browser connection is thwarted. If I may safely assume, you may have a broadband router from Qtel, which might be of some help to you. Log in to your router, and under the firewall tab, you may block the ports 80 and 443. But, be advised, that it won't help you from users using proxy or any VPN such as trying to bypass your local protection. Cheers!
Well, as Thelonius says, you can set up your definition and block the TCP port 80. However, that won't guarantee an encrypted https/SSL aka port 443. For instance, if you have users in the habit of typing "https", your attempts to block the browser connection is thwarted. If I may safely assume, you may have a broadband router from Qtel, which might be of some help to you. Log in to your router, and under the firewall tab, you may block the ports 80 and 443. But, be advised, that it won't help you from users using proxy or any VPN such as trying to bypass your local protection. Cheers!