Differences

This shows you the differences between two versions of the page.

--- networking:dns [2026/07/21 15:44] – external edit 127.0.0.1
+++ networking:dns [2026/07/22 20:46] (current) – removed - external edit (Unknown date) 127.0.0.1
@@ Line 1: / Line 1: @@
-====== DNS Explained ======
-The Domain Name System (DNS) is like the phonebook of the internet. It translates human-readable domain names (like `example.com`) into IP addresses (like `93.184.216.34`) that computers use to communicate.
------
-===== How DNS Works =====
-When you type a domain name in your browser, a series of queries happens:
-. **Resolver** (your ISP or public DNS like 8.8.8.8) receives the query
-. **Root Server** tells which TLD server to ask
-. **TLD Server** (.com, .org, .ir) tells which authoritative server to ask
-. **Authoritative Server** provides the final answer
------
-===== DNS Record Types =====
-^ Record Type ^ Purpose ^ Example ^
-| **A** | Maps domain to IPv4 address | `example.com → 93.184.216.34` |
-| **AAAA** | Maps domain to IPv6 address | `example.com → 2606:2800:220:1:248:1893:25c8:1946` |
-| **CNAME** | Alias (canonical name) | `www.example.com → example.com` |
-| **MX** | Mail exchange server | `mail.example.com` |
-| **TXT** | Text records (SPF, DKIM, etc.) | `v=spf1 include:_spf.example.com ~all` |
-| **NS** | Name server | `ns1.example.com` |
-| **SOA** | Start of authority (zone info) | `ns1.example.com admin.example.com 2026072001` |
------
-===== What is an Authoritative Server? =====
-An **authoritative DNS server** is the final authority for a domain's DNS records. It holds the "official" records that are published in the DNS zone file.
-**Example:**
-| Domain | Authoritative Server | Records |
-|--------|---------------------|---------|
-| `example.com` | `ns1.example.com` | A → 93.184.216.34 |
-| | | MX → mail.example.com |
-| | | TXT → v=spf1 include:_spf.example.com ~all |
------
-===== Telenegar DNS Check =====
-Our [[https://telenegar.ir/dnscheck/|DNS Check tool]] performs these queries from global probes:
-  * **Record Type** — A, AAAA, MX, NS, CNAME, TXT, SOA, PTR
-  * **DNS Server** — Test specific resolvers (Google, Cloudflare, etc.)
-  * **DNSSEC** — Verify DNSSEC signatures
------
-{{tag>dns networking dnssec}}