I cannot connect to our SonicWall NSA220-W firewalls with any browser. They all produce errors, as shown below. All the fixes I can find say “try another browser” or get on the SonicWall to change settings, but I am unable to get onto them. I tried the following Firefox changes which did not work: http://www.ryananddebi.com/2014/12/10/bypassing-the-ssl_error_no_cypher_overlap-error-in-firefox-34/. Also tried following and did not work: Unable to log into If.com on-line banking account | Firefox Support Forum | Mozilla Support. Any suggestions about how to fix this?
This page can’t be displayed
Turn on TLS 1.0, TLS 1.1, and TLS 1.2 in Advanced settings and try connecting to https://x.x.x.x again. If this error persists, it is possible that this site uses an unsupported protocol or cipher suite such as RC4 (link for the details), which is not considered secure. Please contact your site administrator.
Secure Connection Failed
An error occurred during a connection to x.x.x.x. Cannot communicate securely with peer: no common encryption algorithm(s). Error code: SSL_ERROR_NO_CYPHER_OVERLAP