Differences

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

--- networking:dns [2026/07/21 18:15] – 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 the resolver which TLD server to query.
-  - **TLD Server** (.com, .org, .ir) tells the resolver which authoritative server to query.
-  - **Authoritative Server** provides the final answer (e.g., an A, AAAA, MX, or CNAME record).
------
-===== 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` |
-Or visually:
-<code>
-example.com
-  └── authoritative: ns1.example.com
-        ├── A     → 93.184.216.34
-        ├── MX    → mail.example.com
-        └── TXT   → v=spf1 include:_spf.example.com ~all
-</code>
------
-===== Telenegar DNS Check =====
-Use our [[https://telenegar.ir/dnscheck/|DNS Check tool]] to query DNS records from global probes.
------
-{{tag>dns networking dnssec}}