DNS error

bunty82 · 07-28-2008, 12:17 PM

Alright guys here are my
named.conf entries
//
// named.caching-nameserver.conf
//
// Provided by Red Hat caching-nameserver package to configure the
// ISC BIND named( DNS server as a caching only nameserver
// (as a localhost DNS resolver only).
//
// See /usr/share/doc/bind*/sample/ for example named configuration files.
//
// DO NOT EDIT THIS FILE - use system-config-bind or an editor
// to create named.conf - edits to this file will be lost on
// caching-nameserver package upgrade.
//
options {
listen-on port 53 { 192.168.0.45; };
listen-on-v6 port 53 { ::1; };
directory "/var/named";
dump-file "/var/named/data/cache_dump.db";
statistics-file "/var/named/data/named_stats.txt";
memstatistics-file "/var/named/data/named_mem_stats.txt";
query-source port 53;
query-source-v6 port 53;
allow-query { localhost;192.168.0.45; };
allow-transfer {localhost;192.168.0.45; };
forwarders {192.168.0.45;};
forward only ;
};
logging {
channel default_debug {
file "data/named.run";
severity dynamic;
};
};
view localhost_resolver {
match-clients { localhost; };
match-destinations { localhost; };
recursion yes;
include "/etc/named.rfc1912.zones";
};

my forward..zone file entries
$TTL 86400
@ IN SOA mac.com. root.mac.com (
42 ; serial (d. adams)
3H ; refresh
15M ; retry
1W ; expiry
1D ) ; minimum

IN NS mac.com
mac.com IN A 192.168.0.45

my reverse.zone entries
$TTL 86400
@ IN SOA 0.168.192.in.addr.arpa. root.localhost. (
1997022700 ; Serial
28800 ; Refresh
14400 ; Retry
3600000 ; Expire
86400 ) ; Minimum
IN NS 0.168.192.in.addr.arpa.
45 IN PTR mac.com.

Entries of my named.rfc1912.zones

the last 11 lines edited
zone "mac.com" IN {
type master;
file "named.broadcast";
allow-update { none; };
};

zone "0.168.192.in-addr.arpa" IN {
type master;
file "named.zero";
allow-update { none; };
};

my dns name is mac.com

now my problems is i can only
dig it and i get the following
result

; <<>> DiG 9.3.3rc2 <<>> mac.com
;; global options: printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: REFUSED, id: 16514
;; flags: qr rd; QUERY: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;mac.com. IN A

;; Query time: 0 msec
;; SERVER: 192.168.0.45#53(192.168.0.45)
;; WHEN: Mon Jul 28 17:51:48 2008
;; MSG SIZE rcvd: 25

i am unable to
do the following

ssh mac.com
nslookup mac.com
ftp mac.com

i get the following error
unable to resolve name resolution

please help

marozsas · 07-28-2008, 02:06 PM

try to comment the following line in your named.conf:

Code:

// allow-query { localhost;192.168.0.45; };
// allow-transfer {localhost;192.168.0.45; };
// forwarders {192.168.0.45;};
// forward only ;

The allow-query limits who can make queries to this dns. You really want to allow just the dns server itself ?

The forwards clause send the query to ANOTHER dns server. Does not make sense to put the same ip address of your server.

And the port 53 is open in your firewall ?

avijitp · 07-28-2008, 09:13 PM

Whats your /etc/resolv.conf entry?

You name servers ip should be there:
nameserver 127.0.0.1 # If bind running in the same system
nameserver 192.168.0.45

Whats the result of :

dig mac.com @192.168.0.45

bunty82 · 07-29-2008, 06:52 AM

the dig entries are there in the post

Mr. C. · 07-29-2008, 03:44 PM

You do realize that somebody else owns mac.com; you should not attempt to usurp an existing domain.

Did you reload bind?
Did you update the serial number?
What do the messages say in /var/log/messages (or wherever yours logs) upon bind startup?

abdulbaqi · 07-31-2008, 02:41 PM

after all these setting you go in folder /va/../named/
and change the group ownership of your farword/reverse zone files.
In RHEL 5 it is rquired to change the group owner root -> named.

Abdul Baqi