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Old 02-24-2011, 03:22 AM   #1
alkingg
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bind9 reverse zone


Hello,

how to configure reverse zone for x.x.x.x/18 subnet ,all the example on the internet are for /24 or /16 subnets?!!

Thanks
 
Old 02-24-2011, 04:00 AM   #2
bathory
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Hi,

Have a look here for Classless IN-ADDR.ARPA delegation rfc.
Also see the examples here

Regards
 
Old 02-24-2011, 04:14 AM   #3
alkingg
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I have tried these methods without success

zone "63-0.x.x.x.in-addr.arpa" {
type master;
file "/etc/bind/db.x";
};

zone "0/18.x.x.x.in-addr.arpa" {
type master;
file "/etc/bind/db.x";
};
 
Old 02-24-2011, 04:33 AM   #4
bathory
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You must speak with your ISP and make sure he delegates you the subnet x.x.x.x/18
Also confirm with him the zone name (0/18.x.x.x.in-addr.arpa or 63-0.x.x.x.in-addr.arpa)
And try to give some dig results
Code:
dig -x x.x.x.1
 
Old 02-24-2011, 04:43 AM   #5
alkingg
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dig -x was not successful when I used the above zone name..!!
 
Old 02-24-2011, 04:53 AM   #6
bathory
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Quote:
Originally Posted by alkingg View Post
dig -x was not successful when I used the above zone name..!!
I can imagine that it was not successful, otherwise you wouldn't make this post. Just give the dig output masking the IP, so we can see the response you get
 
Old 02-24-2011, 08:43 AM   #7
alkingg
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a.b.c.d ---> ns.domain.com
dig -x a.b.c.d

#################################################################
; <<>> DiG 9.7.1-P2 <<>> -x a.b.c.d
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 24635
;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0

;; QUESTION SECTION:
;d.c.b.a.in-addr.arpa. IN PTR

;; AUTHORITY SECTION:
a.in-addr.arpa. 1800 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1298536290 3600 7200 1209600 7200

;; Query time: 225 msec
;; SERVER: a.b.c.d#53(46.60.48.130)
;; WHEN: Thu Feb 24 16:38:25 2011
;; MSG SIZE rcvd: 103
#####################################################################################
 
Old 02-25-2011, 09:36 AM   #8
bathory
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Code:
a.in-addr.arpa. 1800 IN SOA pri.authdns.ripe.net. dns.ripe.net. 1298536290 3600 7200 1209600 7200
I think the whole b.a.in-addr.arpa is not delegated to some name server, as the SOA is ripe
Are you sure you have the delegation for the 0/18.x.x.in-addr.arpa subnet?x I mean the owner of x.x.in-addr.arpa should point to your dns for 0/18.x.x.in-addr.arpa subnet

Regards
 
  


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