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Setup of BIND 9 name server on OpenBSD
Posted on 01-02-2007 23:13:00 UTC | Updated on 01-02-2007 23:13:00 UTC
Section: /software/bind/ | Permanent Link

This setup was done on OpenBSD 4.1. BIND is installed on OpenBSD 4.1 by default. The files shown below have the paths mentioned at the top. The named dir (/var/named/) has dir's in it that have the config files. Make sure all files and directories are owned by root:named. Check the /var/log/messages for errors on startup. If you dont have any localy resolvable hostnames just take out the last few lines in named.conf.

To start the server use the command argument "-4" for ipv4 only in /etc/rc.local file. The named server should start on boot.

The config below is very simple and has only one domain (domain.lan). It uses the ip block 192.168.0. It uses comcast's name servers for forwarding queries it can't answer. Run only on your internal interface. Change the ip addresses to the internal ip addresses you want to use.

The first file below is /var/named/etc/named.conf. This is the main Bind config file.


options {
        allow-query { 127.0.0.1; 192.168.0/24; };
        allow-recursion { 127.0.0.1; 192.168.0/24; };
        forwarders { 68.87.73.242; 68.87.71.226; };
        listen-on { 192.168.0.1; };
        listen-on-v6 { none; };
        version "gateway dns server";
};

controls { };

logging {
        category lame-servers { null; };
};

zone "." {
        type hint;
        file "standard/root.hint";
};

zone "localhost" {
        type master;
        file "standard/localhost";
        allow-transfer { localhost; };
};

zone "127.in-addr.arpa" {
        type master;
        file "standard/loopback";
        allow-transfer { localhost; };
};

zone "com" {
        type delegation-only;
};

zone "net" {
        type delegation-only;
};

zone "org" {
        type delegation-only;
};

zone "domain.lan" {
        type master;
        file "master/db.domain.lan";
        allow-update { none; };
};

zone "0.168.192.in-addr.arpa" {
        type master;
        file "master/db.0.168.192";
        allow-update { none; };
};

The next file below is the /var/named/standard/root.hint file. This file has the root dns servers in it.

;       $OpenBSD: root.hint,v 1.2 2004/01/30 18:59:41 jakob Exp $
;
;       This file holds the information on root name servers needed to
;       initialize cache of Internet domain name servers
;       (e.g. reference this file in the "cache  .  <file>"
;       configuration file of BIND domain name servers).
;
;       This file is made available by InterNIC
;       under anonymous FTP as
;           file                /domain/named.root
;           on server           FTP.INTERNIC.NET
;       -OR-                    RS.INTERNIC.NET
;
;       last update:    Jan 29, 2004
;       related version of root zone:   2004012900
;
;
; formerly NS.INTERNIC.NET
;
.                        3600000  IN  NS    A.ROOT-SERVERS.NET.
A.ROOT-SERVERS.NET.      3600000      A     198.41.0.4
;
; formerly NS1.ISI.EDU
;
.                        3600000      NS    B.ROOT-SERVERS.NET.
B.ROOT-SERVERS.NET.      3600000      A     192.228.79.201
;
; formerly C.PSI.NET
;
.                        3600000      NS    C.ROOT-SERVERS.NET.
C.ROOT-SERVERS.NET.      3600000      A     192.33.4.12
;
; formerly TERP.UMD.EDU
;
.                        3600000      NS    D.ROOT-SERVERS.NET.
D.ROOT-SERVERS.NET.      3600000      A     128.8.10.90
;
; formerly NS.NASA.GOV
;
.                        3600000      NS    E.ROOT-SERVERS.NET.
E.ROOT-SERVERS.NET.      3600000      A     192.203.230.10
;
; formerly NS.ISC.ORG
;
.                        3600000      NS    F.ROOT-SERVERS.NET.
F.ROOT-SERVERS.NET.      3600000      A     192.5.5.241
;
; formerly NS.NIC.DDN.MIL
;
.                        3600000      NS    G.ROOT-SERVERS.NET.
G.ROOT-SERVERS.NET.      3600000      A     192.112.36.4
;
; formerly AOS.ARL.ARMY.MIL
;
.                        3600000      NS    H.ROOT-SERVERS.NET.
H.ROOT-SERVERS.NET.      3600000      A     128.63.2.53
;
; formerly NIC.NORDU.NET
;
.                        3600000      NS    I.ROOT-SERVERS.NET.
I.ROOT-SERVERS.NET.      3600000      A     192.36.148.17
;
; operated by VeriSign, Inc.
;
.                        3600000      NS    J.ROOT-SERVERS.NET.
J.ROOT-SERVERS.NET.      3600000      A     192.58.128.30
;
; operated by RIPE NCC
;
.                        3600000      NS    K.ROOT-SERVERS.NET.
K.ROOT-SERVERS.NET.      3600000      A     193.0.14.129
;
; operated by ICANN
;
.                        3600000      NS    L.ROOT-SERVERS.NET.
L.ROOT-SERVERS.NET.      3600000      A     198.32.64.12
;
; operated by WIDE
;
.                        3600000      NS    M.ROOT-SERVERS.NET.
M.ROOT-SERVERS.NET.      3600000      A     202.12.27.33
; End of File

The next file below is the localhost zone file /var/named/standard/localhost.

; $OpenBSD: db.localhost,v 1.2 2005/02/07 06:08:10 david Exp $

$ORIGIN localhost.
$TTL 6h

@       IN      SOA     localhost. root.localhost. (
                        1       ; serial
                        1h      ; refresh
                        30m     ; retry
                        7d      ; expiration
                        1h )    ; minimum

                NS      localhost.
                A       127.0.0.1
                AAAA    ::1

The next file below is the file for our only zone the domain.lan zone. The path for it is /var/named/master/db.domain.lan.

domain.lan.     86400   IN SOA  gateway.domain.lan. root.gateway.domain.lan. ( 1 10800 3600 6044800 86400 )
                86400   IN NS   gateway.domain.lan.

gateway.domain.lan. 	86400   IN   A    192.168.0.1
machine1.domain.lan.   	86400   IN   A    192.168.0.2
machine2.domain.lan.  	86400   IN   A    192.168.0.3
dhcp4.domain.lan.   	86400   IN   A    192.168.0.4
dhcp5.domain.lan.   	86400   IN   A    192.168.0.5
dhcp6.domain.lan.   	86400   IN   A    192.168.0.6

The next file below is the file for the in-addr.arpa domain. Inverse (reverse) dns records. The path for it is /var/named/master/db.0.168.192.

0.168.192.in-addr.arpa. 86400   IN SOA  gateway.domain.lan. root.gateway.domain.lan. ( 1 10800 3600 6044800 86400 )
                86400   IN NS   gateway.domain.lan.

1.0.168.192.in-addr.arpa.   86400   IN   PTR   gateway.domain.sys.
2.0.168.192.in-addr.arpa.   86400   IN   PTR   machine1.domain.sys.
3.0.168.192.in-addr.arpa.   86400   IN   PTR   machine2.domain.sys.
4.0.168.192.in-addr.arpa.   86400   IN   PTR   dhcp4.domain.sys.
5.0.168.192.in-addr.arpa.   86400   IN   PTR   dhcp5.domain.sys.
6.0.168.192.in-addr.arpa.   86400   IN   PTR   dhcp6.domain.sys.

Reboot after all your files are in place and configured. Bind should start on boot.

Notes: "rndc reload" will force a zone transfer in bind9.

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