basic server question

[Kevin Brown]

Depends on the configuration of the DSL modem.

In my case I have Qwest for the DSL line and Qwest as my ISP (soon to be MSN,
aargh).  The 675 is setup in PPP mode.  This means that it gets the Net routable
IP (216.160.x.x).  It acts as a DHCP server for all the machines behind it
feeding up 10.0.0.x addresses to the machines and does NAT so that these
machines can talk to the Internet.

Phone line --> DSL rotuer --> Hub/Switch --> Rest of your network

Previously it had been configured in Bridging mode.  In this case it acts as a
media converter ONLY and the Net routable IP would be served up to the machine
that is hooked up to it with the crossover cable that it came with.  In this
scenario is when the *nix (Unix, linux, BSD, FreeSCO) box will come into play.

Phone line --> DSL router --> Firewall --> Hub/Switch --> Rest of your network

So, how the 675 gets setup is dependent on your ISP.

> >>>Is one IP address sufficient for this configuration: Internet---DSL
> >>>router---Linux firewall---Webserver--Host--, 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.
> 
> Ok, I have thought about this for a couple of days, and I am still confused.
> Kurt (on the plug list) told me that if I have only one IP address, then
> give it to give it to the firewall.  But between the firewall and the
> Internet I have a cisco 675 dsl router. What kind of address does it get?
> 
> I cannot give it a private address because it *must* go in front of the
> firewall, right?  My question is, if the firewall gets the static IP, what
> kind of address do I give the DSL router?
> 
> Arghh, if only there was a linux driver for my Intel 2100 DSL NIC, this
> would be so much easier...
> 
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