[YLUG] Interesting Networking Problem

[Gaffer]

Hi Neal,

I don't know if it will help, but the Ipcop Firewall project on 
Sourceforge could be a good source of info !  It certainly gave me a 
good insight into networking machines and isolating local lans from the 
Internet !!  I now use an old 486 as my firewall.  ( But then I'm too 
lazy to climb into the loft to change it !!) ;-)

On Saturday 13 May 2006 23:27, Njal Munro Scribbled:
> On Sat, 2006-05-13 at 22:37 +0100, Stephen wrote:
> > On 13 May 06, Njal Munro (neilmunro at gmail.com) wrote:
> > > Ok so i need a wee bit more help, just a few things i need to
> > > clarify, our network is as follows: -
> > >
> > > 		         /  Laptop 1
> > > Modem > Wireless Router	-   Laptop 2
> > >                          \  Laptop 3
> > >
> > > So the websever i run from laptop 1 can be accessed by laptops 2
> > > and 3, now, i presume that website can't be accessed from ouside
> > > the router?
> >
> > Well, the default firewall configuration on your wireless router
> > would be not to allow external addresses to access internal network
> > services, though you can set up port forwarding if you want the
> > outside world to be able to reach (for instance) apache on laptop1.
> >
> > > And if so, my guess is the network mapped out should look like
> > > this?
> > >
> > > 			 /  Laptop 1
> > > Modem > Server > Router -   Laptop 2
> > >                          \  Laptop 3
> > >
> > > For the server to both be accessed inside our network and from
> > > 'the cold
> >
> > Thats the simplest way of doing it, though you'll then need a
> > firewall on your server. Thats basically how I have things set up
> > here, with dyndns (ddclient) so the server can at least keep the
> > same hostname when its IP changes.
>
> Well it's going to be either debian stable or dapper for the server
> OS, but next question is, if we connect the server to the modem, and
> get a second network card, we can forward packets to the router? I
> presume so, but just need to check....
>
> thanks for the help thus far, again until i get the parts i cant
> ACTUALLY test all this, but at least i know the right direction in
> which to go.
>
> Many thanks
> Neil Munro

-- 
Best Regards:
     Derrick.