Merge pull request #494 from AdguardTeam/agm-2062-update-ag-android-f…

…eatures

[AGM-2062] Update AdGuard for Android features description

docs/adguard-for-android/features/protection/firewall/firewall.md

@@ -15,15 +15,15 @@ This feature helps manage Internet access for specific apps installed on your de
 
 ![Firewall *mobile_border](https://cdn.adtidy.org/blog/new/gdn94firewall.png)
 
-#### Global firewall rules
+### Global firewall rules
 
 This section allows you to control Internet access for the entire device.
 
 ![Global firewall rules *mobile_border](https://cdn.adtidy.org/blog/new/4zx2nhglobal_rules.png)
 
 These rules apply to all apps on your device unless you've set custom rules for them.
 
-#### Custom firewall rules
+### Custom firewall rules
 
 In this section, you can control Internet access for specific apps — restrict permissions for those that you don’t find trustworthy, or, on the contrary, unblock the ones you want to circumvent the global firewall rules.
 
@@ -42,3 +42,11 @@ In this section, you can control Internet access for specific apps — restrict
 1. If you need to block a specific type of connection, toggle the switch to the left. If you want to allow it, leave the switch enabled. **Custom rules override global ones**: any changes you make in *Global firewall rules* will not affect this app.
 
 To delete a rule or app from *Custom rules*, swipe it to the left.
+
+### Notifications
+
+If enabled, this feature notifies you when an app tries to break one of the Firewall rules set for that app (for example, to access mobile data when it shouldn’t). You can turn notifications on and off for all apps or for each app separately.
+
+Tap the notification to access the app’s Firewall settings, or temporary disable all Firewall rules for that app by tapping the corresponding button in the notification. You can also mute all Firewall notifications for the app by tapping the *Mute* button in the notification for that app.
+
+Note that if notifications for multiple apps would be displayed, they will be bundled into a single notification instead.

docs/adguard-for-android/solving-problems/low-level-settings.md

@@ -94,6 +94,14 @@ If this setting is enabled, AdGuard will use fallback upstreams for all domains.
 
 If this setting is enabled, AdGuard will test DNS upstreams before adding or updating custom DNS servers.
 
+#### Filter secure DNS
+
+If this setting is on, AdGuard will apply all enabled DNS filters and DNS user rules to encrypted DNS-over-HTTPS (DoH) traffic and not only to plain DNS. DoH traffic mostly comes from Chrome and other browsers that have a *Secure DNS* (or similar) setting. You can use *Filter secure DNS* in two different modes:
+
+- **Filter on the fly**. In this mode, AdGuard applies all enabled DNS filters and DNS user rules to DoH traffic but doesn’t redirect it to the local DNS proxy. If a DNS server is specified in the browser’s settings, this server will handle the DoH traffic for this browser
+
+- **Redirect to DNS proxy**. In this mode, AdGuard applies all enabled DNS filters and DNS user rules to DoH traffic by redirecting it to the local DNS proxy. The DNS server specified in the AdGuard’s DNS settings will handle all DoH traffic
+
 ### Filtering
 
 #### Capture HAR