SOCKS Host
Supported on: Firefox 60 or later, Firefox 60 ESR or later
Registry
HKLM
Software\Policies\Mozilla\Firefox\Proxy HKCU
Software\Policies\Mozilla\Firefox\Proxy Options
SOCKSProxy text SOCKSVersion enum - SOCKS v4
->
4 - SOCKS v5
->
5
Description
If this policy is enabled, you can set the SOCKS Host and version used when manual proxy configuration is specified. If this policy is disabled or not configured, Firefox does not use a SOCKS Host.