OK no problem. First the Enable SSL 3.0 should be unchecked (disabled). The 2820 is now a venerable old router, and does not have all the features available for the newer routers, so you will have to work around some of the short comings.
In System Maintenance > Management, there is a section called Management Port Set Up. Make sure this is set to User Define Ports, and alter the port for HTTP to something like 1212. This will stop web browsers from finding the Router Login page using the unencrypted HTTP protocol (Unless someone knows the port you have set it to). On later routers there is a tick box to enforce HTTPS Access, so this work round is unnecessary.
In order to access the router you should now type HTTPS://192.168.1.1 into your web browsers address bar (or whatever the IP address is of your router) and press enter.
The first time you try to access the router your web browser will throw an error saying the site is not secure. This is because the router is using a self signed certificate which your browser does not trust. You then need to tell the browser to create an exception for this site, and it should then display the Router login screen. I would create a bookmark/favourite in your browser at this point to make it easier to access the router in the future.
Depending on which browser you are using, the address bar may show Insecure, HTTPS with strike through (Chrome), or a padlock with a yellow exclamation mark (Firefox). The connection, however, IS encrypted and secure. The warnings are there because the certificate wasn't signed by a trusted root authority.
John.
