Clicking the Settings icon provides the option of setting your SSL configuration. Note that this setting covers both KeyControl to KeyControl as well as KeyControl to Policy Agent communications.
Select the protocol you want, and click Apply or Reload.
If you want to be more specific, click Cipher Suite, which presents a more detailed listing of ciphers:
Click Edit to open the list, and then eliminate the ciphers you do not want to use, and then click Done. If you want to add a cipher to the list, type a valid cipher name into the bottom of the dialog box, overwriting Add SSL Cipher. Then click Reload.