At 10:02 PM 02/12/2001, Julian Elischer wrote:
>[EMAIL PROTECTED] wrote:
> >
> > On Mon, 12 Feb 2001 08:20:55 -0800, Julian Elischer wrote:
> >
> > > [EMAIL PROTECTED] wrote:
> > > >
> > > > I'm very sorry if this is a stupid question.
> > > >
> > > > In our company, we want to set up a small network of about 20 PCs.
> > ADSL
> > > > seems like a good inexpensive solution, and I understand that FreeBSD
> > with
> > > > Netgraph can act like a gateway for our computers.
> > >
> > > are they in different places?
> >
> > No - the same place.
> >
> > > Negraph/ppp can act as a gateway for pppoe connections but I am not sure
> > > how that helps you. How do you get the ADSL sessions to terminate on
> > > an ethernet in your office?
> > > (does your ISP provide that service?)
The "way" do to this is by getting a frame T1 and running a DLCI to each of
your customers, and do ethernet bridging over the frame.
You have 1 line into your hub and you can service many customers on the
frame. We have customers services 200+ customers on a single T1 and 800+
and a T3.
A cisco 1600 will choke at about 150 customers (and perform like crap as
you approach it).
Dennis
> > > >
> > > > What I don't understand is whether we will have to use IP aliasing
> > (NAT) or
> > > > we can have our own routable IP range.
> > >
> > > That very much depends on what you think the topology looks like.?
> >
> > I thought something like this:
> >
> > [ISP]
> > |
> > |
> > -----------------
> > Office [ADSL]
> > |
> > |
> > [FreeBSD Box]
> > | | | |
> > | | | |
> > [A][B][C][D]
> >
> > where A, B, C, D all have their own routable IPs. So according to
> what you
> > said, FreeBSD would need to establish a separate PPPoE session for each of
> > the computers A, B, C and D, provided the ISP supports multiple PPPoE
> > sessions over the single ADSL line?
>
>no that would give 4 connections to the FreeBSD machine, and not 4
>connections to the client machines. Does your ISP even use PPPoE?
>it is possible to have ADSL without it..
>
> >
> > I need to know if this configuration is possible, so I will know what
> to ask
> > the ISP sales and support people. So far they haven't been very helpful.
> >
> > Thank you very much for your reply
>
>
>what the ISP will try sell you will be:
>
> > [ISP]
> > |
> > |
> > -----------------
> > Office [ADSL]
> > |
> > | <--------ethernet
> +--+--+--+
> > | | | |
> > | | | |
> > [A][B][C][D]
>
>which is quite possible with ethernet attached ADSL modems.
>
>this might even be an ok way for you to go,
>but the client machines will be 'vulnerable' on the network to
>hackers.
>
>
>A more common answer is:
>
> [ISP]
> > |
> > |
> > -----------------
> > Office [ADSL]
> > |
> > | <--------ethernet
> > [FreeBSD Box]
> > | | | |
> > | | | |
> > [A][B][C][D]
>
>where the freebsd box does NAT and the other machines have addresses
>assigned in the 10.x.x.x space or 192.168.x.x space.
>this gives you some protection of the client boxes.
>
>--
> __--_|\ Julian Elischer
> / \ [EMAIL PROTECTED]
> ( OZ ) World tour 2000-2001
>---> X_.---._/
> v
>
>
>
>
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