Issue with RC4 (ERR_SSL_VERSION_OR_CIPHER_MISMATCH or SSL_ERROR_NO_CYPHER_OVERLAP)
12/20/2019 1192 17148
Unable to open SonicWall Web UI due to an issue with RC4 (ERR_SSL_VERSION_OR_CIPHER_MISMATCH or SSL_ERROR_NO_CYPHER_OVERLAP)
To access Web UI from the Mozilla Firefox browser as a workaround:
- Open Firefox and type about:config and it will ask you accept the risk so accept it and proceed further.
- Now it will display with certain options and type security.tls in the search option and again you will be displayed with 7 options and select the first option that is security.tls_insecure_fallback_hosts.
- Double click on above option security.tls_insecure_fallback_hosts and enter the SonicWall IP (Lan Interface IP) and click OK.
- After all the steps restart the browser of preference and try accessing the SonicWall GUI.