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DNS setup

I can well remember pawing through my O'Reilly "DNS and Bind" book as I first struugled to do this.

Later, a friend pointed out that in 99% of cases, all I needed was to point the Unix box at a nameserver in /etc/resolv.conf - that certainly was easier!

From: Mike Kenyon <mkenyon@promtek.com>
Newsgroups: comp.unix.sco.misc
Subject: Re: DNS Config
Date: Tue, 26 Oct 1999 12:26:36 +0100
Message-ID: <38158FEC.851FF241@promtek.com> 
References: <001d01bf1f0c$d5a6a4c0$0a0000c0@nashcom.co.uk> 
X-NNTP-Posting-Host: promtek.demon.co.uk:194.222.173.146

Nash Computer Technology wrote:
> I want my server to provide local DNS
> services, then to use my ISP's DNS for external Names.

Such a simple thing to want, yet such a pain to set up...

I will post my DNS files, and which you can then bastardise them as you see
fit. You might also want to get a copy of nslint, which is a DNS file checker,
and is quite handy for picking up typos!

; /etc/resolv.conf
hostresorder local bind
domain yourdomain.com
nameserver 127.0.0.1

;
; /etc/named.boot
;
directory       /etc/named.d
cache           .       root.cache
primary         yourdomain.com          named.hosts
; replace the following with whatever local IP network address you're using
primary         1.168.192.in-addr.arpa  named.rev
primary         0.0.127.in-addr.arpa    named.local
; replace the following with each and very DNS server your ISP has
forwarders      0.0.0.0         0.0.0.0

Don't do anything with the root.cache file. That's happy.

; /etc/named.d/named.soa
@               IN SOA  yourdomain.com.    root.yourdomain.com. (
                        19991005; Serial
                        10800   ; Refresh
                        1800    ; Retry
                        3600000 ; Expire
                        86400 ) ; Minimum
                IN NS   dns-server.yourdomain.com.

Obviously replace root.yourdomain.com with the mail address of whoever is
maintaining the DNS (I think, but don't quote me), and dns-server with
whatever the DNS is. This may be a "real" machine name, or an alias which is
what I have done. Nslint does whinge about too many aliases. You'll need to
change serial everytime you make a change to any of the files in /etc/named.d.

; /etc/named.d/named.local

$INCLUDE named.soa
1       IN      PTR     localhost.

; /etc/named.d/named.hosts

$INCLUDE named.soa 

localhost.      IN      A       127.0.0.1
yourserver      IN      A       192.168.1.3
alias           IN      CNAME   yourserver
yourserver      IN      MX 0    mailrelay
yourdoamin.com. IN      MX 0    mailrelay

Obviously mailrelay should be a machine!

; /etc/named.d/named.rev

$INCLUDE named.soa

3       IN      PTR     yourserver.yourdomain.com.

Add other machines into named.hosts and named.rev as you see fit! Enjoy!
-- 
Mike Kenyon <mkenyon@promtek.com> Software Engineer for Promtek Ltd

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