DNS - DOMAIN NAME SYSTEM

Domain Name Service (DNS) is the means by which Internet domain names are translated into IP addresses, or IP addresses are translated into domain names. This protocol is necessary because we humans have trouble remembering numbers, so we let the computers handle changing the names we CAN remember into the numbers computers need to communicate with a remote computer.

THE DOMAIN NAME SYSTEM

Root NIC
Root DNS servers
DNS Servers
- Types
  - Authoritative
    - Master
    - Slave
  - Non-Authoritative
  - Caching / Recursive Servers
  - Iterative Servers
- Functions
  - Resolution
    - Forward
    - Reverse (in-addr.arpa)
    - Round Robin
  - Delegation
  - Caching
  - Zone Transfers
DNS Resolution
- Delegation
- Forward
- Reverse [ in-addr.arpa ]
- Iterative
- Recursive
- Round-Robin
Domains
DNS Registrars
DNS Shared Registration System
DNS Domain Registration

DNS CONFIGURATION

BIND SERVER FILES ( BIND 8 & 9)

namedb (contains the following files)
- named.root
- named.conf
- named.pid
Basic Configuration
- Zone Files
- Resource Records (Forward)
  - SOA
  - NS
  - A
  - MX
- Resource Records (Reverse/in-addr.arpa)
  - PTR
ADVANCED CONFIGURATION
- Split DNS
- Hidden Master

DNS DOMAIN SETUP

Obtain IP addresses
- From your ISP -or-
- From the Network Information Centers:
  - ARIN (Americas, Africa)
  - LACNIC (Latin America)
  - APNIC (Asian Pacific region)
  - RIPE (Europe, Middle East)
Register your domain name
- Find an available domain name
- Find an ACCREDITED registrar
- Register your domain with an
  ACCREDITED REGISTRAR
Decide who will provide your DNS
- Yourself
- Your ISP
REGISTER YOUR NAMESERVERS with your Domain Registrars

shared registration system >>

Donations

Ask InetDaemon

Tutorials

DNS - DOMAIN NAME SYSTEM