RE: [isalist]Tutorial on Adding ISA in a current NAT network

  • From: "Aman Bedi" <gurkirpal.bedi@xxxxxxxxxxx>
  • To: "'[ISAserver.org Discussion List]'" <isalist@xxxxxxxxxxxxx>
  • Date: Wed, 1 Sep 2004 18:58:00 -0400

Tom, 


I just tested my router..i removed NAT and DHCP from router and used the
public ip given as its internal interface. Worked.

So now I just have to add DHCP on ISA ( as I don't have it on internal
network) and configure ISA with NAT . 

Looks good to me now... a little relieved.

I hope I am going in the right direction.

Thanks for ur help

Scanbuy Inc
Aman Bedi | Systems/Network Administrator
54 West 39th Street, 4th Floor, New York, NY 10018 | Fax +1(212) 202-4318 |
Phone +1(212) 278-0178 ext 234 | www.scanbuy.com 

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-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx] 
Sent: Wednesday, September 01, 2004 6:47 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: [isalist]Tutorial on Adding ISA in a current NAT
network

http://www.ISAserver.org

Hi Aman,

Install the DHCP server on the ISA firewall if you don't have one on the
Internal network. Like I said on the Web site, DO NOT put the internal
and external interfaces on the same network segments.

HTH,
Tom 

-----Original Message-----
From: Aman Bedi [mailto:gurkirpal.bedi@xxxxxxxxxxx] 
Sent: Wednesday, September 01, 2004 5:35 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] [isalist]Tutorial on Adding ISA in a current NAT
network

http://www.ISAserver.org

Hi all, 

my problem is .. 

the internal interface of router is 192.168.1.0 (NAT) and my network is
also 192.168.1.0.

Using NAT on DSL router 

so if i add ISA in between, either i have to change the internal
interface of router to some other network or have to change my internal
network's IP ?
(as ISA cant have both interfaces on same network)

so how to go about this?

is there any tutorial or article which describes how to do this, to Use
ISA as routed and not as NAT server.. 

what i mean is a network like this 

current :
Internet---(69.20.--.-- )--->Router --(192.168.1.0)--> Network

What i want :
Internet--(69.20.-.-)-->
Router--(192.168.20.0)-->ISA-(192.168.1.0)->network


where the NAT mappings of 69.20.--.-- to 192.168.1.0 remain on router

Thanks


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