browserSettings.ftpProtocolEnabled
A BrowserSetting object that determines whether the FTP protocol is enabled in the browser.
The underlying value is a boolean.
Note: From Firefox version 88 this setting is read-only.
Browser compatibility
BCD tables only load in the browser
Examples
Toggle the setting:
js
function toggleAllowFtp() {
  function toggle(current) {
    console.log(`Current value: ${current.value}`);
    browser.browserSettings.ftpProtocolEnabled.set({ value: !current.value });
  }
  browser.browserSettings.ftpProtocolEnabled.get({}).then(toggle);
}
browser.browserAction.onClicked.addListener(() => {
  toggleAllowFtp();
});