For example, a simple ISA
server with two network adapters, one connected to the Internet and the other connected
to the internal network, could apply the Edge Firewall template. That template would
then configure common settings for this design, such as allowing web access for clients in
the internal network and blocking all inbound traffic from the external network.
The following default network templates are included in ISA Server 2006 Standard Edition:
. Edge Firewall??”This template configures the ISA server as a dual-NIC system that
provides traditional firewall functionality, with one NIC connected to the Internet
and the other to the internal network.
. 3-Leg Perimeter??”This template expands the Edge Firewall template design to
include a third NIC connected to a Perimeter (DMZ) network.
. Front Firewall??”A front firewall is an ISA server that is deployed as a dual-NIC
server, but one that works in combination with a back firewall to provide two routes
out of a network that is sandwiched between both ISA firewalls.
. Back Firewall??”The Back Firewall template applies rules that provide for the second
ISA server in the Front/Back Firewall design just described.
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