}
}
```
+### CaptivePortal
+This policy enables or disables captive portal support by setting and locking the preference `network.captive-portal-service.enabled`.
+```
+{
+ "policies": {
+ "CaptivePortal": [true|false]
+}
+```
### Certificates
This policy can be used to install certificates or to read certificates from the system certificate store on Mac and Windows.
}
}
```
+### ExtensionUpdate
+This policy enables or disables extension updates by setting and locking the preference `extensions.update.enabled`.
+```
+{
+ "policies": {
+ "ExtensionUpdate": [true|false]
+}
+```
### HardwareAcceleration
This policy disables hardware acceleration by locking the preference layers.acceleration.disabled to true.
```
}
}
```
+### NetworkPrediction
+This policy enables or disables network prediction (DNS prefetching) by setting and locking the preferences `network.dns.disablePrefetch` and `network.dns.disablePrefetchFromHTTPS`.
+```
+{
+ "policies": {
+ "NetworkPrediction": [true|false]
+}
+```
### OverrideFirstRunPage
This policy allows you to override the first run page. If you leave the URL blank, the first run page will not be displayed.
```
}
}
}
+```
### SSLVersionMin
This policy allows you to set the minimum TLS version.
```
"SSSLVersionMax": ["tls1", "tls1.1", "tls1.2",. "tls1.3"]
}
}
-
```