}
}
```
+### DisableSysAddonUpdate
+This policy prevents system add-ons from being updated or installed.
+```
+{
+ "policies": {
+ "DisableSysAddonUpdate": true
+ }
+}
+```
### DisplayBookmarksToolbar
This policy turns on the bookmarks toolbar by default. A user can still turn it off and it will stay off.
```
}
}
```
+### Proxy
+This policy allows you to specify proxy settings. These settings correspond to the connection settings in Firefox preferences.
+To specify ports, append them to the URLs with a colon (:). If Locked is set to true, the values can't be changed by the user.
+```
+{
+ "Proxy": {
+ "Mode": ["none", "system", "manual", "autoDetect", "autoConfig"]
+ "Locked": [true, false]
+Z "HTTPProxy": "URL_TO_PROXY",
+ "UseHTTPProxyForAllProtocols": [true, false]
+ "SSLProxy": "URL_TO_PROXY",
+ "FTPProxy": "URL_TO_PROXY",
+ "SOCKSProxy": { "URL_TO_PROXY",
+ "SOCKSVersion": [4, 5],
+ "Passthrough": "List of passthrough addresses/domains",
+ "AutoConfigURL": "URL_TO_AUTOCONFIG",
+ "AutoLogin": [true, false],
+ "UseProxyForDNS": [true, false]
+ }
+}
+```