Sometimes managing different devices with old certificates using a fresh browser can be a headache for sure. Because of SSLv3 POODLE Vulnerability most of browsers disabled the SSLv3, so the only way i got to connect was changing about:config in Firefox the following values:
security.tls.version.min=0
security.tls.version.max=0
Possible Values
0
SSL 3.0 is the minimum required / maximum supported encryption protocol. (Default up to FF/TB 33.0 and SM 2.30 for minimum version.)
1
TLS 1.0 is the minimum required / maximum supported encryption protocol. (This is the current default for the minimum required version.)
2
TLS 1.1 is the minimum required / maximum supported encryption protocol.
3
TLS 1.2 is the minimum required / maximum supported encryption protocol. (This is the current default for the maximum supported version.)
Do not forget to change for original value again!