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NAT mode or Routing mode on ISA ?

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NAT mode or Routing mode on ISA ? - 5.May2005 5:44:00 AM   
hd73

 

Posts: 16
Joined: 14.Sep.2004
Status: offline
Hi everyone,

I 've already configured NAT mode on ADSL modem.
I think it is not necessary for NAT mode on ISA.
How can i configure ISA as a router ?

Thanks for reply.
Post #: 1
RE: NAT mode or Routing mode on ISA ? - 5.May2005 6:12:00 AM   
LLigetfa

 

Posts: 2187
Joined: 10.Aug.2004
From: fort frances.on.ca
Status: offline
AFAIK, ISA 2000 only does NAT.

(in reply to hd73)
Post #: 2
RE: NAT mode or Routing mode on ISA ? - 5.May2005 8:32:00 AM   
AHIT

 

Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
agreed.
If you wanted a router you could have saved a couple thousand $$ on ISA licences!

Whilst your DSL modem may be provided somebasic packet filtering by using NAT why ignore the capabilities of ISA with respect to application filtering, access authentication etc etc ?

[ May 05, 2005, 08:33 AM: Message edited by: Ahit ]

(in reply to hd73)
Post #: 3
RE: NAT mode or Routing mode on ISA ? - 5.May2005 11:47:00 AM   
hd73

 

Posts: 16
Joined: 14.Sep.2004
Status: offline
Hi Ahit,

Thanks for your reply. But NAT is used for translating multi-Private IPs to public IP and hides inside address.
In NAT or Routing mode, i think ISA can also filt packet at application layer. My ADSL has been configured for using NAT, if ISA is also NAT, the delay of network will increase.
Thanks for your advice.

(in reply to hd73)
Post #: 4
RE: NAT mode or Routing mode on ISA ? - 9.May2005 2:22:00 AM   
AHIT

 

Posts: 1561
Joined: 22.Jul.2002
From: Sydney, Australia
Status: offline
I fully understand both NAT and routing.
I'm somewhat taken aback by "if ISA is also NAT, the delay of network will increase" - sure.. by microseconds...!

Rather that trying to work out how to do what you've described. Let's start from the beginning?
What are you trying to achieve?
What are you trying to fix?
What's your intended purpose for ISA?

(in reply to hd73)
Post #: 5
RE: NAT mode or Routing mode on ISA ? - 10.May2005 10:02:00 AM   
hd73

 

Posts: 16
Joined: 14.Sep.2004
Status: offline
Hi,
I think it'd better not several NAT periods in network. Althought the delay 's short or long, it's not a best solution.
I understand the advantage of ISA against a basic packet filter.
In ISA2004, there are two options : Routed and NAT network relationships. That 's something i wondered.
Thank for your reply.
Goodbye.

(in reply to hd73)
Post #: 6

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