BIND 9 with views recursion issues

Jeffrey Reasoner jeff.reasoner at mail.hccanet.org
Tue Nov 14 19:34:53 UTC 2006


It is absolutely *not* true that Bind 9 doesn't work. It's also not
particularly *new*.
Your config is broken. Seems like testing prior to putting it into
production would have been wise.
However, that said, the problem is likely that you are using the same
address for your transfers. A your external_dns view zonefiles probably
have internal_dns data in them (if they populate at all). However this
isn't terribly useful since the addresses aren't publically routable.
Change the source IP of the transfers for the external view.
Searching the archives of this list will provide examples of what you
need.

On Tue, 2006-11-14 at 10:31, FredrichManey wrote:
> All,
> 
> I'm experiencing an extremely frustrating issue involving recursion in
> a new BIND 9 installation.
> 
> Environment:
> 2 new Solaris 9 servers running bind 9.3.2 built from source. They are
> configure with two views - internal and external - and are in a dual
> master configuration. They are on RFC 1918 addresses behind a NAT
> firewall and should only be accessible from the internal network (the
> external view is being built with the intention of these machines
> becoming 'hidden masters' for the public name servers on the outside of
> the firewall).
> 
> Problem:
> When trying to resolve some specific zones that are not in the cache, I
> get server timeouts and non-existent zone responses. This does not
> happen for all non-cached zone, but it does happen for all look ups of
> the affected zones (tested using dig and nslookup, both locally and
> from remote clients).
> 
> 
> Here's the relevant parts of my named.conf file:
> 
> // BIND Option Statements
> options {
>    version "You have been logged and reported.";
>    // All paths in this file are relative to this directory.
>    directory "/named/";
>    listen-on port 53 { any; };
>    listen-on-v6 { none; };
>    pid-file "var/named.pid";
>    statistics-file "var/statistics";
>    memstatistics-file "var/memstats";
>    dump-file "var/named.dump";
>    zone-statistics yes;
>    auth-nxdomain no;     # conform to RFC1035
> };
> 
> // Access Control Lists
> acl rfc_1918        { 10.0.0.0/8; 172.16.0.0/12; 192.168.0.0/16; };
> acl private_dns     { 10.3.8.100; 10.3.8.101; };
> acl internal_dns    { 10.3.8.100; 10.3.8.101; };
> acl external_dns    { 74.128.1.70; 74.128.1.71; };
> 
> // snip logging configuration
> 
> // internal view for internal hosts on inside network and dmz
> view "internal" {
>    // any host that doesn't match here falls through to the external
> view
>    match-clients { "rfc_1918"; };
>    allow-query { "rfc_1918"; };
>    allow-recursion { "rfc_1918"; };
>    allow-transfer { "internal_dns"; };
>    notify-source 10.3.8.100 port 53;
>    query-source address 10.3.8.100 port 53;
>    transfer-source 10.3.8.100 port 53;
> 
>    zone "." {
>       type hint;
>       file "db/internal/named.root";
>    }
> // snip internal view master and slave zone configurations;
> };
> 
> // external view for external hosts and networks on the internet
> view "external" {
>    // any host that didn't match the internal view above
>    match-clients { any; };
>    allow-query { any; };
>    allow-recursion { none; };   # recursion disabled for external
> clients
>    allow-transfer { "external_dns"; };
>    notify-source 10.3.8.100 port 53;
>    query-source address 10.3.8.100 port 53;
>    transfer-source 10.3.8.100 port 53;
> 
>    zone "." {
>       type hint;
>       file "db/external/named.root";
>    };
> // snip external view master and slave zone configurations
> };
> 
> 
> Any help would be greatly appreciated. This is impacting production and
> if I don't get resolved soon I'm going to be forced to go back Bind 8
> without views because "bind 9 doesn't work and we are only going there
> because it's the new thing".
> 
> fpsm
> 
> 
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