Berkeley Internet Name Domain (BIND)

Berkeley Internet Name Domain (BIND)
An Introduction

Prof. David Bernstein
James Madison University

Computer Science Department

bernstdh@jmu.edu

Overview

Purpose:
- resolver - client-side library routines (used, for example, by nslookup and WWW browsers)
- named - server-side name daemon
Configuration Types:
- Master - authoritative server for the zone
- Slave - read-only copy of the authoritative server
- Caching Only
- Resolver Only (i.e., no local caching)

Configuring the Resolver

Configuring the Name Daemon

Location:
- Usually in the file /etc/named.conf or in the file /var/named/chroot/etc/named.conf
Contents:
- One options block
- Multiple zone blocks

Configuring the Name Daemon (cont.)

Required Zones:
- Root Zone Initialization (/var/named/root.hint or /var/named/chroot/var/named/root.hint)
- Localhost Forward Lookup (/var/lib/named/localhost.zone or /var/named/chroot/var/named/localhost.zone)
- Localhost Reverse Lookup (/var/lib/named/127.0.0.zone or /var/named/chroot/var/named/127.0.0.zone)
Authority Zones:
- Root Zone Forward Lookup (/var/lib/named/filiastellae.zone or /var/named/chroot/var/named/filiastellae.zone)
- Root Zone Reverse Lookup (/var/lib/named/192.168.1.zone or /var/named/chroot/var/named/192.168.1.zone)

Precedence

Starting/Stopping the Name Daemon

Syntax:
- /etc/init.d/named [start | stop | restart ]
When?
- Usually when the system is started (depending on the run level) which is usually controlled by the file /etc/rc.d