Re: How to enable bind to listen querys from all my network

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On Thu, Aug 28, 2008 at 8:10 AM, Spook ZA <spookza@xxxxxxxxx> wrote:
Hi Guys.
I installed BIND 9.3.3rc2 straight off the CentOS 5.1 CDs.
By default the /var/named/chroot is empty, so all I did was copy the
cp -R /usr/share/doc/bind-9.3.3/sample/* /var/named/chroot/
and it inserts a working set of files.
Editing /var/named/chroot/etc/named.conf shows a sample setup that listens on all interfaces
(which is why I set up the firewall first to block all interfaces) and has 3 views (localhost_resolver, internal and external)
Then it is a simple matter to set up forwarders in the options section for caching and off you go.
Further tweaking should allow you to restrict the interfaces and adding zones (master/slave/forward) into the appropriate views
will allow resolving of internal or domains hosted by the server.

By default there is no "listen-on port" option in the sample file, so it listens on the default port (53) on all interfaces.

HTH
Regards,
  Andrew.

Thanks for the tip ... i knew there had to be an easier way!



On Thu, Aug 28, 2008 at 11:23 AM, Miguel A. Velasco <miguel.suscripcion@xxxxxxxxx> wrote:
Hello all,

I´ve installed a proxy Squid in my gateway and a Cache DNS Server with
bind. The problem is the server is only resolving is own querys but not
the client queries from my company.
When I do:
$service named start
I see in /var/log/messages:

starting BIND 9.3.4-P1 -u named -t /var/named/chroot
found 1 CPU, using 1 worker thread
loading configuration from '/etc/named.conf'
listening on IPv6 interface lo, ::1#53
listening on IPv4 interface lo, 127.0.0.1#53
command channel listening on 127.0.0.1#953
command channel listening on ::1#953
zone 0.in-addr.arpa/IN/localhost_resolver: loaded serial 42
zone 0.0.127.in-addr.arpa/IN/localhost_resolver: loaded serial 1997022700
zone 255.in-addr.arpa/IN/localhost_resolver: loaded serial 42
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/localhost_resolver:
loaded serial 1997022700
zone localdomain/IN/localhost_resolver: loaded serial 42
zone localhost/IN/localhost_resolver: loaded serial 42
running

I don´t understand why is only "listening on IPv4 interface lo,
127.0.0.1#53"
I have bind-chroot installed with the following options in /etc/named.conf:

options {
       listen-on port 53 { 127.0.0.1; 10.10.80.0; };
       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";

       // Those options should be used carefully because they disable port
       // randomization
       // query-source    port 53;
       // query-source-v6 port 53;

       allow-query     { localhost; };
};
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";
};

Where 10.10.80.0 is my network range. What may I do my server really
listen for all my network? Nowadays it´s listenning just itself ....

Thanks very much for your attention.
Miguel A. Velasco

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