Windows 2003 Dual-Homed Problem

Hey guys, im really in a bind. Ive been rackin my brain
for the past 3 weeks with this problem. Heres the rundown:

I have a Windows 2003 Enterprise server box with 2
NIC's Installed: 1 Lan, 1 DMZ. It is also a Exchange 2003
Front-End server.

The Problem:
At random times (its totally unpredictable), The DMZ
Link will go down. It seems to recieve packets, but it
sends the packets out the LAN Interface. I tryed to
configure the same setup on my BE Exchange server, and it
did the same thing.

Ive searched the web for hours looking for a solution, and
any help would be greatly apprecated. Thanks guys.

Dom Venezia
Network Administrator
Center For Technical Studies in Montgomery County

It could well be a DNS problem. If you are allowing dynamic DNS, you
may have multiple entries for the server in DNS. Perhaps the traffic is
going to the LAN NIC because the name is resolving to the LAN IP.

If it is a DNS problem, post it in the windows.server.dns newgroup.
They can probably sort it for you. I am familiar with the problem, but in
relation to RRAS (where the second interface is a RAS interface, not a DMZ
NIC). You aren't running remote access as well, are you? That would do it.

"Zoop" <(E-Mail Removed)> wrote in message
news:1df901c3e0e5$eaec4070$(E-Mail Removed)...
> Hey guys, im really in a bind. Ive been rackin my brain
> for the past 3 weeks with this problem. Heres the rundown:
>
> I have a Windows 2003 Enterprise server box with 2
> NIC's Installed: 1 Lan, 1 DMZ. It is also a Exchange 2003
> Front-End server.
>
> The Problem:
> At random times (its totally unpredictable), The DMZ
> Link will go down. It seems to recieve packets, but it
> sends the packets out the LAN Interface. I tryed to
> configure the same setup on my BE Exchange server, and it
> did the same thing.
>
> Ive searched the web for hours looking for a solution, and
> any help would be greatly apprecated. Thanks guys.
>
> Dom Venezia
> Network Administrator
> Center For Technical Studies in Montgomery County
>

Nope, I experaminted with RRAS trying to get an ipsec link
from the Front-end(In the DMZ) To the Back-end(In the Lan)
Exchange servers so i wouldnt have to have a Billion ports
to open on my firewall... But RRAS Is disabled. Thanks
for pointing me in the right direction!

Dom Venezia

>-----Original Message-----
> It could well be a DNS problem. If you are
allowing dynamic DNS, you
>may have multiple entries for the server in DNS. Perhaps
the traffic is
>going to the LAN NIC because the name is resolving to the
LAN IP.
>
> If it is a DNS problem, post it in the
windows.server.dns newgroup.
>They can probably sort it for you. I am familiar with the
problem, but in
>relation to RRAS (where the second interface is a RAS
interface, not a DMZ
>NIC). You aren't running remote access as well, are you?
That would do it.
>
>"Zoop" <(E-Mail Removed)> wrote in
message
>news:1df901c3e0e5$eaec4070$(E-Mail Removed)...
>> Hey guys, im really in a bind. Ive been rackin my brain
>> for the past 3 weeks with this problem. Heres the
rundown:
>>
>> I have a Windows 2003 Enterprise server box with 2
>> NIC's Installed: 1 Lan, 1 DMZ. It is also a Exchange
2003
>> Front-End server.
>>
>> The Problem:
>> At random times (its totally unpredictable), The
DMZ
>> Link will go down. It seems to recieve packets, but it
>> sends the packets out the LAN Interface. I tryed to
>> configure the same setup on my BE Exchange server, and
it
>> did the same thing.
>>
>> Ive searched the web for hours looking for a solution,
and
>> any help would be greatly apprecated. Thanks guys.
>>
>> Dom Venezia
>> Network Administrator
>> Center For Technical Studies in Montgomery County
>>
>
>
>.
>