Securing-Optimizing-RH-Linux-1_2_233
Comments and suggestions concerning this book should be mailed to gmourani@videotron.ca
© Copyright 1999-2000 Gerhard Mourani and Open Network Architecture ®
233
2592000
; Expire
345600 )
; Minimum
; Name Server (NS) records.
NS deep.openarch.com.
NS mail.openarch.com.
; Addresses Point to Canonical Names (PTR) for Reverse lookups
1 PTR deep.openarch.com.
2 PTR mail.openarch.com.
3 PTR www.openarch.com.
Configuration of the /var/named/db.openarch file for a master name server
Use this configuration for the server machine on your network that acts as a master name server.
This file db.openarch map addresses to host names. Create the following file in /var/named/.
Create the db.openarch file (touch /var/named/db.openarch) and add:
; Revision History: April 22, 1999 - admin@mail.openarch.com
; Start of Authority (SOA) records.
$TTL 345600
@ IN SOA deep.openarch.com. admin.mail.openarch.com. (
00
; Serial
86400
; Refresh
7200
; Retry
2592000
; Expire
345600 )
; Minimum
; Name Server (NS) records.
NS deep.openarch.com.
NS mail.openarch.com.
; Mail Exchange (MX) records.
MX 0 mail.openarch.com.
; Address (A) records.
localhost
A 127.0.0.1
deep
A 208.164.186.1
mail
A 208.164.186.2
www
A 208.164.186.3
; Aliases in Canonical Name (CNAME) records.
;www CNAME deep.openarch.com.
Configuration of the /var/named/db.cache file for a master and slave name
servers
Before starting your DNS server you must take a copy of db.cache file and copy it in the
/var/named/ directory. The db.cache tells your server where the servers for the root zone
are.
Use the following command on another Unix computer in your organization to query a new
db.cache file for your DNS Server or pick one from your Red Hat Linux CD-ROM source
distribution:
·
To query a new db.cache file for your DNS Server, use the following command:
[root@deep /]# dig @.aroot-servers.net . ns > db.cache