Admin console, disable non-SSL ports

This is my 1st post to this forum so please be gentle …

I’‘ve discovered how to disable non-SSL connections for both Admin Console and User connections by setting ports to -1 in the jive-messenger.xml and System Properties in Admin Console respectively, but shouldn’'t -1 be a valid port number on the Admin Console/Server Settings page?

thanks for a great product

cheers,

Tim