RH253_OrganizingNetworkSystem.md

Domain Name System

• forward lookup
• reverse lookup
• by name domains
• email routing info

Zone,Domains, & Delegation

• a domain is a NDS scope
• a zone is teh part of the domain
• subdomains

Name Server Hierarchy

• Master name server
  • Contains the master copy of data for zone
    • domain forward lookup zone file
    • domain reverse lookup zone file
    • named.ca
    • localhost zone
    • named local
• Slave name server
  • Provides a backup to the master name server
  • All slave servers maintain synchronization with their master name server

The DNS Server

Berkeley Internet Name Domain

Service Profile: DNS

• type: system v
• packages: bind,bind-utils,bind-chroot
• daemons: named,rndc
• script: 53(named) 953(rndc)
• prots: /var/named/chroot,/etc/named.conf,/var/named/,/etc/rndc
• related: caching-nameserver,openssl

bind-chroot

Configuring BIND

• /var/named/chroot/etc/named.conf
• zones,options,acl,etc

Global Options

Address Control Lists

Name Daemon Control Utility

Master and Slave Zones

Reverse Lookup Zones

Root Zone and Loopback Zone

Zone Files

Resource Records

SOA(Start of Authority)

NS(Name Sever)

Main Record Types

Example Zone File

Round Robin Load Sharing Throuth DNS

Delegating Subdomains

BIND Syntax Utilities

Caching-only Name Server

BIND Utilities

Advanced BIND Features

DHCP Overview

Service Profile: DHCP

Configuring a DHCP Server