One NIC NAT

[janko.klemensek]

Hello

I have two computers on "switch". I want one computer to be router to
the other. Both computers have only one NIC (and winXP SP2). I know it
is posible with Sygate SHN One NIC. I am wondering if it is posible
with just windows settings, like ICS?

Suggestion:
Computer who is a router have two IP setings, one static public IP
(from ISP) and one static private IP to communicate with other
computer. I can set these in Advanced Internet Protocol Properties. Now
how to bridge these two (public and private) networks?

 

[Dariusz Hoszowski]

Hi,
As i know ICS can share connection, but you have to have 2 NIC's (one
receives automaticly IP 192.168.0.1, DHCP, etc. and second is for your
ISP)...
It is not a good idea (from security point of view) to make Internet card a
local card also (for example you can't block spoofed traffic, etc.).

Regards,
Dariusz Hoszowski

 

[janko.klemensek]

I am aware of security risk.
I am wondering if it is posible?
What about IPEnableRouter value in registry?

 

[Dariusz Hoszowski]

Hi,
As Microsoft said:
"Alternate IP Configuration. Allows a single interface to make use of more
than one IP address as long as only one is used at a time."
so even if you turn the registry value on - it will not work because the
interface will use only one IP address (not two).

Regrads,
Dariusz Hoszowski

 

[janko.klemensek]

Thanks for your quick replay.

 

[Steve Winograd [MVP]]

Hello

I have two computers on "switch". I want one computer to be router to
the other. Both computers have only one NIC (and winXP SP2). I know it
is posible with Sygate SHN One NIC. I am wondering if it is posible
with just windows settings, like ICS?

Suggestion:
Computer who is a router have two IP setings, one static public IP
(from ISP) and one static private IP to communicate with other
computer. I can set these in Advanced Internet Protocol Properties. Now
how to bridge these two (public and private) networks?

No, it's not possible. ICS requires separate network connections for
the Internet and the home network. There's no way to have two
connections for one NIC, even with multiple IP addresses.
--
Best Wishes,
Steve Winograd, MS-MVP (Windows Networking)

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