control which of 4 external nics has primary ip for box?

I've got a box with 4 external NICs.

I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
'adapters and bindings' and have it be the primary NIC for the box, and have its
primary ip show up in a browser for whatIsMyIp.com

But, that is not the case.

How can I change the primary nic for a computer with 4 nics?
--
Thanks in advance, Les Caudle

Give us more details what you want to do.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
I've got a box with 4 external NICs.

I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
'adapters and bindings' and have it be the primary NIC for the box, and have its
primary ip show up in a browser for whatIsMyIp.com

But, that is not the case.

How can I change the primary nic for a computer with 4 nics?
--
Thanks in advance, Les Caudle

Bob - I think I resolved it. I took the default gatway off the other NICs and
was able to force the desired NIC to use the correct ip.

It was rather strange. win2003 switched the default ip an hour after I moved
the ips to what I thought was the default NIC.

Regards, Les Caudle

On Wed, 4 Jul 2007 09:26:10 -0500, "Robert L [MVP - Networking]"
<(E-Mail Removed)> wrote:

>Give us more details what you want to do.
>
>Bob Lin, MS-MVP, MCSE & CNE
>Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
>How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
> I've got a box with 4 external NICs.
>
> I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
> 'adapters and bindings' and have it be the primary NIC for the box, and have its
> primary ip show up in a browser for whatIsMyIp.com
>
> But, that is not the case.
>
> How can I change the primary nic for a computer with 4 nics?
> --
> Thanks in advance, Les Caudle

This the issue I thought. thank you for the update.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...

Bob - I think I resolved it. I took the default gatway off the other NICs and
was able to force the desired NIC to use the correct ip.

It was rather strange. win2003 switched the default ip an hour after I moved
the ips to what I thought was the default NIC.

Regards, Les Caudle

On Wed, 4 Jul 2007 09:26:10 -0500, "Robert L [MVP - Networking]"
<(E-Mail Removed)> wrote:

>Give us more details what you want to do.
>
>Bob Lin, MS-MVP, MCSE & CNE
>Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
>How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
> I've got a box with 4 external NICs.
>
> I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
> 'adapters and bindings' and have it be the primary NIC for the box, and have its
> primary ip show up in a browser for whatIsMyIp.com
>
> But, that is not the case.
>
> How can I change the primary nic for a computer with 4 nics?
> --
> Thanks in advance, Les Caudle

Bob - one thing I don't understand.

One one of the NICs with no default gateway (which I presume would point to the
ISP's router), I can telnet into port 25 and see the Exchange Server.

This confuses me. I understand how it can see the packet arrive, but how can it
respond? It shouldn't be able to send out on that NIC without a default
gateway.

Is the packet coming in on the NIC without the default gateway, but returning on
the box's main NIC that does have a default gateway?

Or, does it know from the incoming packet how to reply (the incoming packet
passes thru the default gateway, so it uses this info to send the return packet
thru the NIC without the default gateway setting - effectively having a default
gateway at that moment to reply with)?

Thanks, Les Caudle

On Wed, 4 Jul 2007 14:49:37 -0500, "Robert L [MVP - Networking]"
<(E-Mail Removed)> wrote:

>This the issue I thought. thank you for the update.
>
>Bob Lin, MS-MVP, MCSE & CNE
>Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
>How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
>
> Bob - I think I resolved it. I took the default gatway off the other NICs and
> was able to force the desired NIC to use the correct ip.
>
> It was rather strange. win2003 switched the default ip an hour after I moved
> the ips to what I thought was the default NIC.
>
> Regards, Les Caudle
>
> On Wed, 4 Jul 2007 09:26:10 -0500, "Robert L [MVP - Networking]"
> <(E-Mail Removed)> wrote:
>
> >Give us more details what you want to do.
> >
> >Bob Lin, MS-MVP, MCSE & CNE
> >Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> >How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> > "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
> > I've got a box with 4 external NICs.
> >
> > I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
> > 'adapters and bindings' and have it be the primary NIC for the box, and have its
> > primary ip show up in a browser for whatIsMyIp.com
> >
> > But, that is not the case.
> >
> > How can I change the primary nic for a computer with 4 nics?
> > --
> > Thanks in advance, Les Caudle

Correct. It won't return packets if it doesn't have the route except you have a manual route. Check the routing table.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
"Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
Bob - one thing I don't understand.

One one of the NICs with no default gateway (which I presume would point to the
ISP's router), I can telnet into port 25 and see the Exchange Server.

This confuses me. I understand how it can see the packet arrive, but how can it
respond? It shouldn't be able to send out on that NIC without a default
gateway.

Is the packet coming in on the NIC without the default gateway, but returning on
the box's main NIC that does have a default gateway?

Or, does it know from the incoming packet how to reply (the incoming packet
passes thru the default gateway, so it uses this info to send the return packet
thru the NIC without the default gateway setting - effectively having a default
gateway at that moment to reply with)?

Thanks, Les Caudle

On Wed, 4 Jul 2007 14:49:37 -0500, "Robert L [MVP - Networking]"
<(E-Mail Removed)> wrote:

>This the issue I thought. thank you for the update.
>
>Bob Lin, MS-MVP, MCSE & CNE
>Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
>How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
>
> Bob - I think I resolved it. I took the default gatway off the other NICs and
> was able to force the desired NIC to use the correct ip.
>
> It was rather strange. win2003 switched the default ip an hour after I moved
> the ips to what I thought was the default NIC.
>
> Regards, Les Caudle
>
> On Wed, 4 Jul 2007 09:26:10 -0500, "Robert L [MVP - Networking]"
> <(E-Mail Removed)> wrote:
>
> >Give us more details what you want to do.
> >
> >Bob Lin, MS-MVP, MCSE & CNE
> >Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
> >How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
> > "Les Caudle" <(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
> > I've got a box with 4 external NICs.
> >
> > I'd assumed that in 'Advanced Settings' I could move the NIC to the top of the
> > 'adapters and bindings' and have it be the primary NIC for the box, and have its
> > primary ip show up in a browser for whatIsMyIp.com
> >
> > But, that is not the case.
> >
> > How can I change the primary nic for a computer with 4 nics?
> > --
> > Thanks in advance, Les Caudle

"Les Caudle" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> Is the packet coming in on the NIC without the default gateway, but
> returning on
> the box's main NIC that does have a default gateway?

Yes.
It doesn't have to take the same path,...it just has to get there.

--
Phillip Windell
www.wandtv.com

The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------
Understanding the ISA 2004 Access Rule Processing
http://www.isaserver.org/articles/IS...cessRules.html

Troubleshooting Client Authentication on Access Rules in ISA Server 2004
http://download.microsoft.com/downlo...7/ts_rules.doc

Microsoft Internet Security & Acceleration Server: Partners
http://www.microsoft.com/isaserver/partners/default.asp

Microsoft ISA Server Partners: Partner Hardware Solutions
http://www.microsoft.com/forefront/e...epartners.mspx
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