Where? in small home network should Caching DNS Serve be located?

[Johnny Smith]

I'm wondering if I should set up a Caching DNS Server 
for my home network?

And on which machine/s? should I have one?

The attached text file shows my network layout.

Thanks for your guidance.

Johnny

__________________________________
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                                My home network diagram.

                             ((??)) = name of the machine

Using 'Bastille-Linux' for firewalls on (( GW ))  and  (( LAN  )).
port 80 is only open to the 'outside world/internet on (( GW  )).
port 80 on (( LAN  )) is open to (( NK )) and (( LK  )) only.

            --------------------------
            |       (( GW ))         |              
            |                [ ppp0 ]|<<<=== The Internet
            |                        |
            |                        |  
            |                        |      ----------------------------
            |                        |      |         (( WS  ))        |
            |                        |      |    a public WebServer    |
            |        eth1[172.16.0.1] ===>>>|eth0[172.16.0.2]          |         
   
            |                        |      |                          |
            |                        |      ----------------------------
            |                        |      -----------------------------|
            |                        |      |         (( LAN ))          |
            |                        |      | Webserver/Ftp Server       |
            |                        |      | accessible by              |
            |                        |      | (( NK )) and (( LK ))'only'|
            |                        |      | [2 internal hosts]         |
            |                        |      |                            |
            |                        |      |                            |
            |          eth0[10.0.0.1] ===>>>|eth0[10.0.0.2]              |       
     
            |                        |      |                            |
            --------------------------      |                            |
                                            |                            |
                                            |                            |
            --------------------------      |                            |
            |       (( NK  ))        |      |                            |
            |      a workstation     |      |                            |
            |     eth0[192.168.1.105]|<<<===|eth1[192.168.1.100]         |
            |                        |      |                            |
            -------------------------       |                            |
                                            |                            |
                                            |                            |
            --------------------------      |                            |
            |       (( LK ))         |      |                            |
            |      a workstation     |      |                            |
            |        eth0[172.17.0.2]|<<<===|eth1[172.17.0.1]            |
            |                        |      |                            |
            --------------------------      ------------------------------

[Robert G. (Doc) Savage]

On Monday March 15, 2004 Johnny Smith <opensource_powered(a)yahoo.com&gt; wrote:
>  I'm wondering if I should set up a Caching DNS Server
>  for my home network?
>
>  And on which machine/s? should I have one?
>
>  The attached text file shows my network layout.
>
>  Thanks for your guidance. 
Johnny,

Assuming your gateway [GW] is a (non-embedded) Linux box, I think that
would be your first choice. A caching nameservice is usually a very tiny
service on a home network, so system load should not be much of a worry no
matter where you host it.

--Doc Savage
  Fairview Heights, IL

[Tom Mitchell]

On Mon, Mar 15, 2004 at 03:24:20PM -0600, dsavage(a)peaknet.net wrote:
>  On Monday March 15, 2004 Johnny Smith
> <opensource_powered(a)yahoo.com&gt; wrote:
>  > I'm wondering if I should set up a Caching DNS Server
>  > for my home network?
>  >
>  > And on which machine/s? should I have one? 
...
>  
>  Assuming your gateway [GW] is a (non-embedded) Linux box, I think that
>  would be your first choice. A caching nameservice is usually a very tiny
>  service on a home network, so system load should not be much of a worry no
>  matter where you host it. 
Are you thinking nscd or bind?
Do you want to  expose internal names?
Do you want the name server to answer to the world?
Is there an internal .vs. external view difference?
Are MX records internal and external the same?
DHCP....?

My guess is that you want it on or very close to your web and mail
servers. You do want to ensure that lookups of localhost.localdomain
get quick responses throughout the net.

Some of the questions above will help you decide if the service 
is on the firewall or just inside and behind the firewall/gateway.

At the physical layer, for a network this small, as long as there are
routes to the nameserver box it does not matter IMO.  You might know
something about the network loads and physical plant to change my
mind.

The first setup is 98% of the work so consider two (twins).  Since
resolv.conf lets you list three, a pair is good stuff.  With FC2 in the
near future you can update one then the other when you are happy with
the first.

-- 
	T o m  M i t c h e l l 
	/dev/null the ultimate in secure storage.

[Rodolfo J. Paiz]

At 14:43 3/15/2004, you wrote:
> I'm wondering if I should set up a Caching DNS Server
> for my home network?
>
> And on which machine/s? should I have one? 
No reason why you *need* it. If you *want* it for some reason, place it on 
any Linux machine. Most people use the gateway/firewall/router machine for 
simplicity.


-- 
Rodolfo J. Paiz
rpaiz(a)simpaticus.com
http://www.simpaticus.com

[marcos colome]

I am not in the fedora list anymore

"Rodolfo J. Paiz" <rpaiz(a)simpaticus.com&gt; wrote:At 14:43 3/15/2004, you
wrote:
> I'm wondering if I should set up a Caching DNS Server
> for my home network?
>
> And on which machine/s? should I have one? 
No reason why you *need* it. If you *want* it for some reason, place it on 
any Linux machine. Most people use the gateway/firewall/router machine for 
simplicity.


-- 
Rodolfo J. Paiz
rpaiz(a)simpaticus.com
http://www.simpaticus.com


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[S. Gongola]

It would be simpler to just use the hosts file
/etc/hosts
man hosts

On Mon March 15 2004 03:43 pm, Johnny Smith wrote:
>  I'm wondering if I should set up a Caching DNS Server
>  for my home network?
>
>  And on which machine/s? should I have one?
>
>  The attached text file shows my network layout.
>
>  Thanks for your guidance.
>
>  Johnny

[Christoph Wickert]

Am Di, den 16.03.2004 schrieb S. Gongola um 19:58:
>  It would be simpler to just use the hosts file
>  /etc/hosts
>  man hosts
>   
Try dnsmasq available at
http://dag.wieers.com/packages/dnsmasq/
http://dag.wieers.com/packages/dnsmasq/dnsmasq-2.5-1.rhfc1.dag.i386.rpm

It's a really small (the rpm is 86 kb) caching dns on top of the
/etc/hosts file, so you only need to setup a single file. Also supports
DHCP and MX (Mail eXchange) Records. For a home network this is all you
need.

Christoph