RE: DMZ Subnet
- From: "John Tolmachoff \(Lists\)" <johnlist@xxxxxxxxxxxxxxxxxxx>
- To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
- Date: Fri, 5 Sep 2003 11:56:18 -0700
It will not work.
You have to properly subnet your assigned block to have public IP in DMZ.
At a minimum, you would need a 240 block, with 16 IP assigned as follows:
.0 240 not usable
.1 240 ISP router
.2 248 ISP router internal
.3 248 External of ISA
.4 248 available
.5 248 available
.6 248 available
.7 248 not usable
.8 248 not usable
.9 248 ISA DMZ
.10-.15 248 available for DMZ
.16 248 not usable
John Tolmachoff MCSE CSSA
Engineer/Consultant
eServices For You
www.eservicesforyou.com
> -----Original Message-----
> From: Tom Mendelboim [mailto:tomerm1@xxxxxxx]
> Sent: Friday, September 05, 2003 9:57 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] DMZ Subnet
>
> http://www.ISAserver.org
>
>
> Hi everyone,
>
> I would like to know if what I want to do will work...
>
> I have ISA with 3 interfaces. Inside, outside and one of them is a DMZ. I
have
> received 2 IP addresses from my provider. I would like to use one IP on
the outside
> interface and one IP on the DMZ with a subnet mask of 255.255.255.255.
>
> Will that work in a sense that any packets not beloging to the DMZ will be
routed
> correctly? I have to do something like that since the ISP gives me only 2
IP
> addresses...
>
> Thank you all,
>
> Tom
>
>
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