In Firefox you can check the minimum and maximum supported versions of TLS as follows:
In a new tab, type or paste
about: config in the address bar and press Enter. Click the button promising to be careful.
In the Search box above the list, type or paste
tls and pause while the list is filtered
To disable SSL3 and require TLS of a late enough version, double-click
security.tls.version.min and enter the desired value:
- 0 = SSL 3.0 okay
- 1 = at least TLS 1.0
- 2 = at least TLS 1.1 **this setting will be required for AFF**
To set the highest version, double-click
security.tls.version.max and enter the desired value:
- 0 = up to SSL 3.0
- 1 = up to TLS 1.0
- 2 = up to TLS 1.1 **at least this**
- 3 = up to TLS 1.2
- 4 = up to TLS 1.3
The Yandex browser should always try to negotiate as high up the SSL chain as it can.
Cheers
Russ