Access the Enterprise Administration Server and choose the Preferences tab.
Click the Encryption Prefs link.
Check the SSL versions you want your server to communicate with. The latest and most secure version is SSL version 3, but a few older clients use only SSL version 2. You will probably want to enable your server to use both versions.
Check the ciphers you want your server to use. The ciphers are listed for each version of SSL. Some ciphers are more secure, or stronger, than others. Generally speaking, the more bits a cipher uses during encryption, the harder it is to decrypt the data. Ciphers are described after this list.
Click OK. Make sure you restart your server.