Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH

Most modern web browser no longer support RC4 encrytion as it is officially declared unsecured by IETF memo RFC7465 published on February 2015. (See Workaround below to find an older browser to get around this error) Thus if RC4-Only encryption is enabled in SonicOS, it would block access to the Firewall Management Portal and will display "err_ssl_version_or_cipher_mismatch" error … Continue reading Tricks: Unable to access Sonicwall Management Portal? ERR_SSL_VERSION_OR_CIPHER_MISMATCH