reverse named setup

[Paul Howarth]

W.L. C wrote:
> My ISP has allow 64 IPs to me. Delegate forward and reverse zone to me 
> too as 64/26.73.52.10.in-addr.arpa.

This is an example of classless in-addr.arpa delegation as described in 
RFC 2317. Read the RFC for further details.

> How do I configure named to do 
> reserve lookup for myself and  I am running on a FC4 machine. Below are 
> some of what i had tried to do. Please take note, all IPs and domain are 
> not mine. Just an example. Thanks.
> 
> named.conf
> 
> options {
>        directory "/var/named";
> };
> zone "." IN {
>        type hint;
>        file "named.local";
> };
> zone "64/26.73.52.10.in-addr.arpa" IN {
>        type master;
>        file "64.26.73.52.10.in-addr.arpa";
> };

OK so far.

> zone "70.73.52.10.in-addr.arpa" IN {
>        type master;
>        file "10.52.73.70";
> };

This zone is the responsibility of your ISP, not you, so you don't want 
or need this one. Your ISP should have a bunch of CNAME records in this 
zone that point into your zone, such as:

64.73.52.10.in-addr.arpa. CNAME 64.64/26.73.52.10.in-addr.arpa.
65.73.52.10.in-addr.arpa. CNAME 65.64/26.73.52.10.in-addr.arpa.
66.73.52.10.in-addr.arpa. CNAME 66.64/26.73.52.10.in-addr.arpa.
67.73.52.10.in-addr.arpa. CNAME 67.64/26.73.52.10.in-addr.arpa.

If you had used real IP addresses then I could have checked that these 
were in place. Diagnosing DNS problems is very difficult if you 
obfuscate things by changing names/addresses. If you need to follow up 
in this thread, please use real names and addresses.

> zone "dns1.mydomain.com" IN {
>        type master;
>        file "dns1.mydomain.com";
> };

Surely you mean:

zone "mydomain.com" IN {
	type master;
	file "mydomain.com";
};

> include "/etc/rndc.key";
> 
> ---------------------------------------------------------------------------
> 
> /var/named/dns1.mydomain.com
> 
> $TTL 86400
> @       IN      SOA     dns1.mydomain.com. postmaster.mydomain.com. (
>                        2005110501
>                        3600
>                        7200
>                        864000
>                        86400 )
> 
>                                IN      NS          dns1.mydomain.com.
>                                IN      NS          dns2.mydomain.com.
> 
>                                IN      MX     5    dns1.mydomain.com.
> 
>                                IN      A           10.52.73.70
> ftp                            IN      A           10.52.73.70
> mail                           IN      A           10.52.73.70
> pop                            IN      A           10.52.73.70
> dns2                           IN      A           10.52.73.80

Here you have specified A records for hosts such as 
ftp.dns1.mydomain.com, dns2.dns1.mydomain.com rather than 
ftp.mydomain.com and dns2.mydomain.com, because of the error in the zone 
specification above. You probably want:

/var/named/mydomain.com

$TTL 86400
@	IN	SOA	dns1.mydomain.com. postmaster.mydomain.com. (
				2005111501
				1H
				2H
				240H
				24H )

		NS	dns1
		NS	dns2

		MX 5	dns1

dns1		A	10.52.73.70
ftp		A	10.52.73.70
mail		A	10.52.73.70
pop		A	10.52.73.70

dns2		A	10.52.73.80

> /var/named/64.26.73.52.10.in-addr.arpa
> 
> $TTL 86400
> @       IN      SOA     dns1.mydomain.com. postmaster.mydomain.com. (
>                        2005083107
>                        3600
>                        7200
>                        864000
>                        86400 )
> 
>                                                    IN    NS 
> dns1.mydomain.com.
>                                                    IN    NS 
> dns2.mydomain.com.
> 
> 64/26.73.52.10.in-addr.arpa                        IN    NS  dns1.mydomain.com.
> 64/26.73.52.10.in-addr.arpa                        IN    NS  dns2.mydomain.com.
> 
> 70.64/26.73.52.10.in-addr.arpa                     IN    PTR  dns1.mydomain.com.
> 76.64/26.73.52.10.in-addr.arpa                     IN    PTR  dns1.domain2.com.
> 77.64/26.73.52.10.in-addr.arpa                     IN    PTR  another.domain..which.is.on.another.box.com.
> 77.64/26.73.52.10.in-addr.arpa                     IN    PTR  another.domains.on.another.box.com.
> 80.64/26.73.52.10.in-addr.arpa                     IN    PTR  dns2.mydomain.com.

Here you are specifying too much data on the left side; the origin of 
this zone is 64/26.73.52.10.in-addr.arpa so you should not repeat this 
information in the zone file. What you want is:

$TTL 86400
@	IN	SOA	dns1.mydomain.com. postmaster.mydomain.com. (
				2005111501
				1H
				2H
				240H
				24H )

		NS	dns1
		NS	dns2

70		PTR	dns1.mydomain.com.
76		PTR	dns1.domain2.com.
77		PTR	another.domain..which.is.on.another.box.com.
78		PTR	another.domains.on.another.box.com.
80		PTR	dns2.mydomain.com.

> /var/named/10.52.73.70

This zone should be on your ISP's nameservers, not yours. You don't need 
this file.

Paul.