DHCP, DNS/Dynamic DNS???

DHCP, DNS/Dynamic DNS???

Post by [T]rance » Wed, 26 Sep 2001 07:31:06

Hi all...

My question is DNS related...

I have a small lan consisting of a Mandrake linux server with an adsl
connection which shares the connection to 3 other windows machines on
the network. I have previously ran a caching DNS with my ISPs DNS
servers as forwarders and used a host file to make sure local lookups
are quick. I decided to change the network so that the linux box runs
a DHCP server and the windows clients use the DHCP instead of having a
fixed IP, this works great. My only problem now is that any internal
services like telnet/ftp etc... to the linux server take an age to
connect. I assume that this is because my requests get sent to the
outside world via DNS. I have toyed with the idea of cheating a little
and fixing which IP gets sent to which machine on the lan so I can
still run a host file but I want to do it the/a proper way.

My question is, what is the proper way? Is Dynamic DNS the way to go?

I have used a windows 2000 dynamic DNS server as my DNS server which
worked really well but I would rather have a linux solution.

Any help would be greatly appreciated,




DHCP, DNS/Dynamic DNS???

Post by Kevin Tolliso » Wed, 26 Sep 2001 11:25:53

take a look at SMEv5 it is a server and gateway based on RH7.0.  I am fairly
new to Linux and I had it up as a PDC on a similar size and type of network
in less than an hour



1. Dynamic DNS not working with Solaris DHCP/DNS server and win clients

I've got a solaris 9 04/04 box set up with the bundled DNS and DHCP servers but I can't seem to get windows XP clients to dynamicaly register their names in DNS. DHCP seems to work just fine.

I've followed the rather simple doco at http://docs.sun.com/db/doc/806-5529/6jehkcs59?a=view however it still does not work.
This doco covers adding the allow-update directive to the named.conf file, which I've done for local and loop back IPs and then ticking the "Update DNS host information upon client request" check box in DHCP configuration.

When I configure a DHCP domain from scratch and it comes to the section on where to store host names, I choose DNS, I get a popup that says "Unable to manage defined hosts table". I've gone back to "none" then later ticked Edit -> Modify: "Update DNS host information upon client request"....still no updates.

There is nothing loged in the DHCP logs relevant to dns problems.

My named.conf file is:
bash-2.05# cat /etc/named.conf
options {
        directory "/etc/named";
        pid-file "/var/run/named.pid";
        forwarders {
                <dns 1>;
                <dns 2>;
                <dns 3>;
        forward first;

zone "." {
        type hint;
        file "/etc/named/db.cache";

zone "pjama.loc" {
        type master;
        file "/etc/named/<my domain>.hosts";
        allow-update {

zone "200.168.192.in-addr.arpa" {
        type master;
        allow-update {
        file "/etc/named/192.168.200.rev";

logging {
        category default {

Any assistance appreciated.

Peter Arnold

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