feat: Elaborate Firewall, DNS services

amithm7 · amithm7 · commit 4c9ffea5d35a · 2021-03-21T22:02:06.000+05:30
diff --git a/docs/dns/introduction.md b/docs/dns/introduction.md
@@ -4,7 +4,7 @@ title: Rethink DNS
 slug: /dns
 ---
 
-Rethink**DNS** is DNS Resolver Service with custom rules and blocklists.
+Rethink**DNS** is [DNS Resolver](https://www.cloudflare.com/learning/dns/what-is-dns/) Service with custom rules and blocklists. A DNS resolver is an address book of the internet-- it helps locate IP addresses of the servers given a domain name. For example, dns.google.com (a domain name) is located at 8.8.8.8 (IP address). This mapping is retrieved by a DNS resolver.
 
 You can configure Rethink**DNS** in the companion [firewall app](firewall) or even in your own device / internet browser that supports [Secure DNS](https://wikipedia.org/wiki/DNS_over_HTTPS) (aka DNS over HTTPS). See below on [how to configure](#how-to)
 
diff --git a/docs/firewall/introduction.md b/docs/firewall/introduction.md
@@ -4,7 +4,7 @@ title: Rethink Firewall
 slug: /firewall
 ---
 
-RethinkDNS comes with a companion **Firewall** app for Android, that lets you monitor and control Internet access to apps installed on your device.
+RethinkDNS comes with a companion [**Firewall**](https://en.wikipedia.org/wiki/Firewall_(computing)) app for Android, that lets you monitor and control Internet access to apps installed on your device. It includes rules such as, _block apps by category_, _block when app is in the background_, _block an app when device is locked_, or _block an app forever_.
 
 RethinkDNS Firewall when configured [DNS](dns), you can analyse DNS requests in real-time and read through aggregated reports in the App logs. And it also helps evade Internet censorship as enforced in most countries.
 
