SSL encryption

No SSL encryption when navigating inside the place.

Only login step will be encrypted. Navigation inside the place is not. This is the best option on a performance side. It fits most needs when you don't manage critical data.

Optional SSL encryption of the whole place. Your users will be able to connect using Http:// and Https:// protocol.

SSL encryption can be used, or not. It will depend on the protocol used by your users. it the URL they use starts with HTTP:// the navigation won't be encrypted, if it starts by HTTPS it will be.

Full mandatory SSL encryption of the place.

Navigation into your place will always use SSL encryption (even RSS feeds). That is the more secured option but it can slow navigation slightly. Recommended in case of professional use on critical data.