Error code: SSL_ERROR_UNSUPPORTED_VERSION
Hello Firefox Support, I need help to upgrade the version of the security protocol that enables access to my NAS unit. Now the message;
"Secure Connection Failed An error occurred during a connection to 192.168.1.201. Peer using unsupported version of security protocol. Error code: SSL_ERROR_UNSUPPORTED_VERSION
The page you are trying to view cannot be shown because the authenticity of the received data could not be verified. Please contact the website owners to inform them of this problem.
This website might not support the TLS 1.2 protocol, which is the minimum version supported by Firefox."
indicates I no longer can access my page until I find the remedy to this issue. Thank you in advance for cooperation and help with is matter.
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Web search: https://www.bing.com/search?q=SSL_ERROR_UNSUPPORTED_VERSION
There is security software like Avast, Kaspersky,
BitDefender and ESET that intercept secure
connection certificates and send their own.
https://support.mozilla.org/en-US/kb/firefox-cant-load-websites-other-browsers-can
https://support.mozilla.org/en-US/kb/firefox-and-other-browsers-cant-load-websites
https://support.mozilla.org/en-US/kb/secure-connection-failed-firefox-did-not-connect
https://support.mozilla.org/en-US/kb/websites-dont-load-troubleshoot-and-fix-errors
That would require a firmware update of that NAS device as it sounds it only supports TLS 1.0 or 1.1 and not TLS 1.2 or 1.3 what currently the minimum requirement is.
You can still enable TLS 1.0/1.1 via about:config although this is not recommended and you should only flip the pref when you need to access this device/website and reset the pref to false once you are done.
- about:config => security.tls.version.enable-deprecated = true
You can open the about:config page via the location/address bar. If you get the warning page, you can click the "Accept the Risk and Continue" button.
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