newbie q - What is a domain

Hello,

I know what a domain is in the Windows & Internet world, but how is it
relevant to a private network in Linux.

If I have a local domain say called HOME, what services depend on this.
How is it relevant to day-to-day usage in Linux.

Also, my main box is a gateway. How can I setup DNS for the local
network only.

Lastly, I´ve tried setting up MASQUERADING using the following;

entering;
echo ¨1¨ > /proc/sys/net/ipv4/ip_forward
iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
iptables -A INPUT -i eth0 -m state --state NEW,INVALID
iptables -A FORWARD -i eth0 -m state --state NEW,INVALID

in /etc/rc.d/rc.local

but it don't work.

any help much appreciated,
Finbar.

"Finbar" <(E-Mail Removed)> wrote in message
news:bl0t11$2b35$(E-Mail Removed)...

> Lastly, I´ve tried setting up MASQUERADING using the following;
>
> entering;
> echo ¨1¨ > /proc/sys/net/ipv4/ip_forward
> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
> iptables -A INPUT -i eth0 -m state --state NEW,INVALID
> iptables -A FORWARD -i eth0 -m state --state NEW,INVALID
>
> in /etc/rc.d/rc.local
>
> but it don't work.

You don't have any '-j' action on line 2 and 3. Use the examples in this
howto:

http://www.tldp.org/HOWTO/IP-Masquer...WTO/index.html

Cheers
Tim

"Finbar" <(E-Mail Removed)> wrote in message
news:bl0t11$2b35$(E-Mail Removed)...
> Hello,
>
> I know what a domain is in the Windows & Internet world, but how is it
> relevant to a private network in Linux.
>
> If I have a local domain say called HOME, what services depend on this.
> How is it relevant to day-to-day usage in Linux.

You can set up a standard DNS server on your network, and put hostnames
record for the private IP's on your network if you wish. Or you can use
Samba, and set up a WINS windows style name server with linux as well.

They are no different than the windows and internet standards. In fact, the
name server that comes default with most linux distributions is BIND. Which
is the DNS server that drives DNS on the internet...

Eric

Eric Gibson wrote:

> In fact, the
> name server that comes default with most linux distributions is BIND. Which
> is the DNS server that drives DNS on the internet...

Most of it perhaps but not all. People running content servers can use
whatever software they like. Not all of the root servers run bind
either, so that if someone discovers a vulnerability which can take out
a particular nameserver, they can't take out all the root servers with
it.

Regards, Ian