SSL-Connection problem through Firefox/Chromium to access the Web-GUI

Zyxel小編 Lucious
Zyxel小編 Lucious Posts: 279  Zyxel Employee
edited April 2021 in Switch
Hello everyone,

Recently we've been reported some cases about SSL-connection (HTTPS) problem when using Firefox/Chromium to access the Web-GUI. The browser pops out an error message "SSL_ERROR_NO_CYPHER_OVERLAP" through Firefox and "ERR_SSL_VERSION_OR_CIPHER_MISMATCH" through Chromium.

This issue can be highly related to the SSL-inspection-module on your Anti-Virus softwares. It seems to block certain self-signed certificate of the switches and causes a connection denial.

As almost all Anti-Virus engines today support the SSL inspection through MITM, try disabling the function when you have such problem.

Zyxel_Lucious