Simultaneous DSL and cable modem access on a SBS network...sorf ot.

This is going to sound like a rather oddball scenario, but here goes:

I'm working on a network of about 30 computers inside the network and a
server running Small Business Server 2003 Standard Edition. We're
getting Microsoft CRM put on the server and we need to have a static IP
for it.

The problem is that DSL in the area is not fast enough to support all
of the users and the CRM/Exchange Server simultaneously. And any kind
of a connection that would (5 MB or higher fibre connection) costs in
the 4-digit range, which I can't justify. We do, however, have an
existing cable connection (which doesn't offer true static IP service,
or this would all be solved.)

So...my idea is to use a DSL connection and a cable connection
simultaneously.

I made a diagram outlining what I want to do below:

http://216.89.218.233/public/dsl-cable-diagram.gif

The cable modem already has a router, so I don't need one there. I
would need one for the DSL modem, though, which is fine.

So...here's what I'm thinking of doing:

1) Close all ports on the cable router (since it's not being used for
anything other than web browsing and basic connectivity anyway).

2) Open up whichever ports on the DSL router need to be opened to get
CRM and Exchange Server to work (I don't really know what those are, so
if anyone could help out that way, that'd be great...although I could
find this for myself.)

3) Configure the server to accept traffic from the DSL modem
only...although I'm not 100% sure how to do that either.

Is this logical? And if it is, what would I need to configure on the
SBS to get it to work? The router's not a big deal...just open up
ports or if worse comes to absolute worst create a DMZ for the server
and away we go. But the SBS would be the part that would throw me.

Thanks.



Adam
http://www.searchenginefriendlylayouts.com/

.

Relevant Pages

  • Re: Simultaneous DSL and cable modem access on a SBS network...sorf ot.
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    (microsoft.public.windows.server.sbs)
  • Re: Simultaneous DSL and cable modem access on a SBS network...sorf ot.
    ... Your existing router would be surplus to requirements. ... Cable connection. ... I have my MX records pointing to the DSL line, as primary, ... The server and the fax (the line the DSL modem ...
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