Access either the Administration Server or the Server Manager and click the Preferences tab.
Click the Edit Listen Sockets link, and then click the link for the listen socket you want to edit.
For a secure listen socket, the available cipher settings are displayed.
If security is not enabled on the listen socket, no SSL and TLS information is listed. To work with ciphers, ensure that security is enabled on the selected listen socket. For more information, see Enabling Security for Listen Sockets.
Select the checkboxes corresponding to the required encryption settings and click OK.
Select both TLS and SSL 3.0 for Netscape Navigator 6.0. For TLS Rollback also select TLS, and make sure both SSL 3.0 and SSL 2.0 are disabled.
Once SSL has been enabled on a server, its URLs use https instead of http. URLs that point to documents on an SSL-enabled server are formatted as : https://servername.domain.dom:port, for example, https://admin.example.com:443
If you use the default secure HTTP port (443), you do not need to enter the port number in the URL.