Unable to access OEM 11g after upgrading to Firefox ver 37.0.1
Quick workaround: Set Firefox's about:config setting security.tls.version.fallback-limit to '0'.

The correct way to fix this is to get the site to updated.

Source: http://forums.mozillazine.org/viewtopic.php?f=37&amp;t=2925119&amp;start=15