gecko-dev/remote/doc/Prefs.md

Preferences

There are a couple of preferences associated with the remote agent:

Configurable preferences

remote.enabled

Indicates whether the remote agent is enabled. When the remote agent is enabled, it exposes a [--remote-debugging-port flag] for Firefox. When set to false, the remote agent will not be loaded on startup.

remote.force-local

Limits the remote agent to be allowed to listen on loopback devices, e.g. 127.0.0.1, localhost, and ::1.

remote.log.level

Defines the verbosity of the internal logger. Available levels are, in descending order of severity, Trace, Debug, Config, Info, Warn, Error, and Fatal. Note that the value is treated case-sensitively.

remote.log.truncate

Defines whether long log messages should be truncated. Defaults to true.