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Old 09-24-2012, 09:14 PM   #1
deadlyp99
LQ Newbie
 
Registered: Sep 2012
Posts: 2

Rep: Reputation: Disabled
centos-5-x86_64 named/bind problems


Hello linuxquestions.org. Lurked for years, and actually ran into something I can't solve without posting

I've recently been tasked with running a vps. General linux things are no problem, but it has been a while, and I've never touched named/bind before. I am a complete newbie in this area and it rocks! But I could really use some assistance to get it working.

Code:
# /var/named/chroot/var/named/example.local
$TTL 14400
@	IN	SOA	example.com.	admin.example.com.(
	2012092401 ; serial
	86400 ; refresh, seconds
	7200 ; retry, seconds
	3600000 ; expire, seconds
	86400 ) ; minimum, seconds
example.com. 86400 IN NS 10.0.0.0
example.com. 86400 IN NS 10.0.0.1
ns1 IN A 10.0.0.0
ns2 IN A 10.0.0.1
example.com. IN A 10.0.0.1
www IN CNAME example.com.
Code:
#/var/named/chroot/etc/named.caching-nameserver.conf
options {
	listen-on port 53 { any; };
	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";

	allow-query     { any; };
	allow-query-cache { localhost; };
	allow-recursion {"recursive_subnets";};
};
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";
};

acl "recursive_subnets" {
localhost;
};
Code:
#/var/named/chroot/etc/named.rfc1912.zones
zone "." IN {
	type hint;
	file "named.ca";
};

zone "localdomain" IN {
	type master;
	file "localdomain.zone";
	allow-update { none; };
};

zone "localhost" IN {
	type master;
	file "localhost.zone";
	allow-update { none; };
};

zone "0.0.127.in-addr.arpa" IN {
	type master;
	file "named.local";
	allow-update { none; };
};

zone "0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.ip6.arpa" IN {
        type master;
	file "named.ip6.local";
	allow-update { none; };
};

zone "255.in-addr.arpa" IN {
	type master;
	file "named.broadcast";
	allow-update { none; };
};

zone "0.in-addr.arpa" IN {
	type master;
	file "named.zero";
	allow-update { none; };
};

zone "example.com" {
	type master;
	notify no;
	file "/var/named/example.local";
	allow-transfer {10.0.0.1;};
	allow-query {any;};
	allow-update { none; };
};
Code:
#dig example.com (on the server)
; <<>> DiG 9.3.6-P1-RedHat-9.3.6-20.P1.el5_8.4 <<>> example.com
;; global options:  printcmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 16341
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

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

;; ANSWER SECTION:
example.com.		14400	IN	A	10.0.0.1

;; AUTHORITY SECTION:
example.com.		86400	IN	NS	10.0.0.0.exmaple.com.
example.com.		86400	IN	NS	10.0.0.1.example.com.

;; Query time: 0 msec
;; SERVER: 127.0.0.1#53(127.0.0.1)
;; WHEN: Mon Sep 24 19:46:38 2012
;; MSG SIZE  rcvd: 100
All dns tools tell me the that the servers refuse to reply to queries.
Using such tools while named is not running verifies the domain is at least set up to point to those ns and they are visible.

"10.0.0.0.example.com" in the authority section concerns me, as it does not seem like that is what its supposed to look like. Am I right in that respect?

Trying to resolve the dns for the domain or name servers from my local machine all result in "server not found" type messages. I do get a ping response.

If I telnet to the machine on 53, nada, just a blank screen.

iptables looks like this:
Code:
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     udp  --  190.93.240.0/20      anywhere            udp dpt:domain 
ACCEPT     tcp  --  190.93.240.0/20      anywhere            tcp dpt:http 
ACCEPT     udp  --  108.162.192.0/18     anywhere            udp dpt:domain 
ACCEPT     tcp  --  108.162.192.0/18     anywhere            tcp dpt:http 
ACCEPT     udp  --  141.101.64.0/18      anywhere            udp dpt:domain 
ACCEPT     tcp  --  141.101.64.0/18      anywhere            tcp dpt:http 
ACCEPT     udp  --  103.22.200.0/22      anywhere            udp dpt:domain 
ACCEPT     tcp  --  103.22.200.0/22      anywhere            tcp dpt:http 
ACCEPT     udp  --  173.245.48.0/20      anywhere            udp dpt:domain 
ACCEPT     tcp  --  173.245.48.0/20      anywhere            tcp dpt:http 
ACCEPT     udp  --  199.27.128.0/21      anywhere            udp dpt:domain 
ACCEPT     tcp  --  199.27.128.0/21      anywhere            tcp dpt:http 
ACCEPT     udp  --  network/24           anywhere            udp dpt:domain 
ACCEPT     tcp  --  network/24           anywhere            tcp dpt:http 
ACCEPT     udp  --  unknown.scnet.net/24  anywhere            udp dpt:domain 
ACCEPT     tcp  --  unknown.scnet.net/24  anywhere            tcp dpt:http 
ACCEPT     all  --  anywhere             anywhere            
DROP       all  -f  anywhere             anywhere            
DROP       all  --  0.0.0.0/8            anywhere            
DROP       all  --  127.0.0.0/8          anywhere            
DROP       all  --  172.16.0.0/12        anywhere            
DROP       all  --  192.168.0.0/16       anywhere            
DROP       all  --  base-address.mcast.net/3  anywhere            
ACCEPT     icmp --  anywhere             anywhere            icmp echo-request 
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     icmp --  anywhere             anywhere            state ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp recent: SET name: FTP side: dest
ACCEPT     tcp  --  anywhere             anywhere            tcp spts:1024:65535 dpts:1024:65535 recent: CHECK seconds: 10800 name: FTP side: source 
ACCEPT     tcp  --  anywhere             anywhere            tcp spts:1024:65535 dpts:1024:65535 recent: CHECK seconds: 10800 name: FTP side: dest
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp-data 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:26 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:nicname 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:domain 
ACCEPT     udp  --  anywhere             anywhere            udp dpt:domain 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:pop3 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imap 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:https 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtps 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:submission 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imaps 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:pop3s 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:mysql 
LOG        all  --  anywhere             anywhere            limit: avg 1/sec burst 5 LOG level warning prefix `LOG_INPUT ' 
DROP       all  --  anywhere             anywhere            
ACCEPT     esp  --  anywhere             anywhere            
ACCEPT     ah   --  anywhere             anywhere            

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         
ACCEPT     all  --  anywhere             anywhere            
ACCEPT     all  --  anywhere             anywhere            state RELATED,ESTABLISHED 
ACCEPT     icmp --  anywhere             anywhere            state NEW,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpts:1024:65535 state NEW,RELATED,ESTABLISHED 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp recent: SET name: FTP side: dest
ACCEPT     tcp  --  anywhere             anywhere            tcp spts:1024:65535 dpts:1024:65535 recent: CHECK seconds: 10800 name: FTP side: source 
ACCEPT     tcp  --  anywhere             anywhere            tcp spts:1024:65535 dpts:1024:65535 recent: CHECK seconds: 10800 name: FTP side: dest
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp-data 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ftp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:nicname 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:http 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:pop3 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:imap 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:https 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:ssh 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:mysql 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtp 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:domain 
ACCEPT     udp  --  anywhere             anywhere            udp dpt:domain 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:smtps 
ACCEPT     tcp  --  anywhere             anywhere            tcp dpt:svn 
ACCEPT     udp  --  anywhere             anywhere            udp dpts:traceroute:33534 
LOG        all  --  anywhere             anywhere            limit: avg 1/sec burst 5 LOG level warning prefix `LOG_OUTPUT '

Last edited by deadlyp99; 09-25-2012 at 04:05 AM.
 
Old 09-25-2012, 02:19 AM   #2
technicalthug
LQ Newbie
 
Registered: Sep 2012
Distribution: Gentoo, FreeBSD, CentOS
Posts: 18

Rep: Reputation: Disabled
To start off with, your using 10.0.0.0 typically that's a reserved address (as is 10.0.0.255), some software might choke if you use that address.

See here: http://serverfault.com/questions/135...x-x-0-used-for

Quote:
example.com. 86400 IN NS 10.0.0.0
example.com. 86400 IN NS 10.0.0.1
ns1 IN A 10.0.0.0
ns2 IN A 10.0.0.1
Should be something like

Quote:
example.com. 86400 IN NS ns1
example.com. 86400 IN NS ns2
ns1 IN A 10.0.0.0
ns2 IN A 10.0.0.1
also try

Quote:
netstat -a | grep domain
What are you listening on?

Last edited by technicalthug; 09-25-2012 at 02:36 AM.
 
1 members found this post helpful.
Old 09-25-2012, 03:19 AM   #3
henrycoffin
Member
 
Registered: Dec 2006
Distribution: RHEL Debian
Posts: 42

Rep: Reputation: 15
Try changing yout match-clients statement in your localhost_resolver view to { any }; or create an acl containing the ip's of machines you want to query the server from and add that to the match-clients statement.
 
1 members found this post helpful.
Old 09-25-2012, 03:33 AM   #4
deadlyp99
LQ Newbie
 
Registered: Sep 2012
Posts: 2

Original Poster
Rep: Reputation: Disabled
Thank you both for such quick replies. I have been working on this since last week.
I think the match-clients statement is what did it for me. I am extremely happy.
 
  


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