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Send traffic from a subnet to the DMZ without NAT

RRAS, VPN, TS/RDP, Routing and remote Access.

Send traffic from a subnet to the DMZ without NAT

Postby guest » Wed Dec 12, 2007 2:17 pm

Q; I currently have a front-end back-end network setup with the DMZ being in the
middle. I need to NAT exempt traffic to particular subnets from the inside
into the DMZ. The ISA 2006 server is the back firewall.

When I go under the network rules, I do not see an option to NAT exempt from
a particular network to a particular network. Please advise how I can send
traffic through the ISA server without being NAT'd. Thanks.

A: we can define a network rule to set up the route
relationship between the subnets and DMZ by performing the following steps
on the ISA Server.

a.On the ISA server, on the Start Menu, click ALL Programs, click Microsoft
ISA Server, and then click ISA Server Management.
b.In the ISA Server console, in the left pane, expand Configuration, and
then select Networks.
c.In the right pane, select the Network Rules tab.
d.In the task pane, on the Tasks tab, click Create a New Network Rules.
e.In the New Network Rule Wizard dialog box, in the Network rule name, type
a friendly name, and then click Next.
f.On the Network Traffic Source page, click Add.
g.In the Add Network Entities dialog box, click New Subnet.
h.In the New Subnet Rule Element, type a friendly name and address range,
and then click OK.
i.In the Add Network Entities dialog box, click the Subnet you defined, and
click Add.
j.On the Network Traffic Source page, click Next.
k.On the Network Traffic Destination page, click Add.
l.In the Add Network Entities dialog box, click Networks, click Perimeter,
and click Add.
m.On the Network Traffic Destination page, click Next.
n.On the Network Rules page, select Route, and then click Next.
o.On the completing the New Network Rule Wizard page, click Finish.
p.In the right pane, click Apply to apply the new rule.

Then you can define the access rule according to your requirement.
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