basic server question

[Matt Alexander]

On Sun, 2 Sep 2001, Eric wrote:

> Given the following configuration, how many static IP addresses will I need?
> I have one static; is there a mechanism (NAT?) whereby I can set up the
> following network with only one static IP?
>
>
> I have a cisco 675 DSL router, which goes to a zonealarm firewall until i
> get the knowledge to configure linux box as a firewall, and the cajones to
> trust my data with it.
>
> Whichever firewall is used, I want host my own site on Apache Web Server,
> and also host some type of e-mail server.  Lastly, I would like to set up an
> SSH server, and create a VPN between home and work.
>
> Is one IP address sufficient for this, or do I need to pay qworst even more
> money?  Could you explain?  Thanks very much,

The only reason you would need more than one static IP address is if you are
offering two or more of the same service.  So for example, if you wanted to
put a primary and a secondary DNS server behind your NAT/firewall box, then
you'd need to configure the WAN side to listen to both IP addresses and then
forward port 53 for one IP address to your internal primary DNS server, and
forward port 53 for the other IP address to your internal secondary DNS
server.

If you want a really easy solution to your question, I would recommend
buying a SonicWall SOHO2.  It's a great device that provides everything you
would need to do what you want, plus a few nifty extras like blocking
certain specified domains, such as doubleclick.net.  You can, of course, also
setup a Linux box to do the same things, and I should probably recommend the
Linux option more because you'll learn a lot in the process of setting
things up.
~M