sbs 2003 with pbx phone system

External Since: May 17, 2006 Posts: 8

What is the best way to install sbs 2003 with an existing pbx phone system
that port forwards to another location? The pbx box is linux and uses a
simple netgear router for the routing to the workstations and the phone.
Obviously the SBS will handle the dhcp for the workstations after the
upgrade. The question is can I merely split the external ip at the router and
use the same address for the sbs and the phone?

External Since: Feb 14, 2006 Posts: 118

That's how port forwarding works. You can use one IP on the WAN side.
The traffic is routed (by port) to the correct server. 80, 443, 25,
110, 995, etc. can be forwarded to your SBS. The ports required by
your local PBX server can be forwarded accordingly.

With port forwarding, think of the WAN IP address as a building
address. Each forwarded port is an office number. One local resident
(server) can answer one or many office numbers. Without a correct
office number (port), the incoming traffic is blocked from entering.

The caveat is that port forwarding is one-to-one. You can forward port
80 to only one LAN IP, etc.