Which versions of the SSL protocol is Positive SSL compatible with?

Positive SSL is compatible with any browsers and web servers using SSL version 3 - the de facto SSL implementation. SSL version 1 and version 2 have been superseded by version 3 for a number of years, mainly due to the inherent security flaws found in these old versions.

All web browsers developed after Internet Explorer 3 and Netscape 3 use SSL version 3 (however still support older SSL protocol versions). If your webserver is only capable of supporting versions 1 and 2 of the SSL protocol, we strongly recommend that you contact your webserver software vendor for an update - these protocols are flawed.