Routing with specific task

exist local network A

exist network B connected to Internet1 (for foriegn
downloads)

exist network C also connected to Internet2 (mail and city
traffic)

all networks connected to soft router X (Win2K3 with
routing enable + ISA server).

for all computers in network A the default gateway is
router X, and router X decide (accirding routing table)
where "boys" go to left (Internet1) and "girls" go to
right (Internet2).

and the problem: in the network A exist computer that
ALWAYS must go to left (Internet1) all traffic.

if exist solution for this configuration? how? what
filters?

(easy way is place computer to network B, but this network
not my, I must place firewall on it, and if network B down
I cannot redirect traffic to network C.

help pleaase. any thinks.

You are talking about directing traffic by function. RRAS is a simple
router, and will not support this. It will route based on where the traffic
is destined. If you know that your mail is always accessed from a specific
subnet range, then you can mold your routes to accommodate this traffic.
The filtering solution provided in RRAS is also pretty basic, and is used to
either allow the traffic through the router, or to drop the traffic.

--
--
Dusty Harper
Microsoft Corporation
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"Andrey Popov" <(E-Mail Removed)> wrote in message
news:10aa01c3b421$2f983310$(E-Mail Removed)...
> exist local network A
>
> exist network B connected to Internet1 (for foriegn
> downloads)
>
> exist network C also connected to Internet2 (mail and city
> traffic)
>
> all networks connected to soft router X (Win2K3 with
> routing enable + ISA server).
>
> for all computers in network A the default gateway is
> router X, and router X decide (accirding routing table)
> where "boys" go to left (Internet1) and "girls" go to
> right (Internet2).
>
> and the problem: in the network A exist computer that
> ALWAYS must go to left (Internet1) all traffic.
>
> if exist solution for this configuration? how? what
> filters?
>
> (easy way is place computer to network B, but this network
> not my, I must place firewall on it, and if network B down
> I cannot redirect traffic to network C.
>
> help pleaase. any thinks.