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Two NIC/One Proxy - Internal Adapter keeps sending packets

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Robert Bergin

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Mar 31, 1999, 3:00:00 AM3/31/99
to
I have an interested scenario. I have a two-NIC Server running NTS4 with
SP3. It is a classic Proxy layout. The Internal NIC is a private address
(192.168.70.x.) and the External is a Live Internic-assigned IP
address(208.168.50.x).

I am establishing a trust across a 384k line to a NTS4 with SP3 and the same
configuration, two NICs, one private (192.168.71.x) and one real
(208.168.51.x).

Here is the problem. If I load up Network Monitor to examine the traffic.
The External NIC on SERVER1 sends out packets to establish the trust with
SERVER2 and the external NIC on SERVER2 replies. All's well. A few frames
into the dialog and the internal adapter on SERVER2 starts to send packets
to the external adapter on SERVER1. This presents the problem because there
is not route to get back to the Internal adapter.

So if each machine has the Proxy Client installed (MSPCLNT) why would the
internal adapter be sending packets at all? Shouldn't all traffic becoming
from the external adapter only? Any thoughts would be great, I will toss
this up on the newgroups for mass consumption as well.

Thanks,

Rob Bergin, MCSE


Andrey Lazarev

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Apr 1, 1999, 3:00:00 AM4/1/99
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Do you install Proxy server and client on same machine?

D. Gager

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Apr 1, 1999, 3:00:00 AM4/1/99
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Does the internal adapter in Server2 have a Gateway address entered? If so,
I would remove that entry.
--
David Gager, MCP
Network Support Specialist
Educational Service District 112

"When you have eliminated the impossible
whatever remains, no matter how improbable,
must be the solution." -Sherlock Holms

Robert Bergin <ber...@nh1-wsbinc.com> wrote in article
<eEnh5D5e#GA.269@cppssbbsa03>...

DualIP

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Apr 1, 1999, 3:00:00 AM4/1/99
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If the proxy client is running on the same system configure it to use
127.0.0.1 as a proxy

DualIP

Todd Booher

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Apr 1, 1999, 3:00:00 AM4/1/99
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Also check that the internal adapter's subnet from Server2 is listed in
Server2's
LAT.


D. Gager wrote in message <01be7c4d$0c73e340$e264a8c0@dgager>...


>Does the internal adapter in Server2 have a Gateway address entered? If so,
>I would remove that entry.
>--
>David Gager, MCP
>Network Support Specialist
>Educational Service District 112
>
>"When you have eliminated the impossible
>whatever remains, no matter how improbable,
>must be the solution." -Sherlock Holms
>
>Robert Bergin <ber...@nh1-wsbinc.com> wrote in article
><eEnh5D5e#GA.269@cppssbbsa03>...

Mike Manthe (Sysadmin)

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Apr 1, 1999, 3:00:00 AM4/1/99
to
May be a silly question, but do you have IP forwarding enabled? Also, make
sure you have disabled the server service, WINS client, et al from your
external adapter.

Michael Manthe
Systems Administrator
ad...@mobilan.com
Mobile Area Networks, Inc.


Robert Bergin wrote in message ...


>I have an interested scenario. I have a two-NIC Server running NTS4 with
>SP3. It is a classic Proxy layout. The Internal NIC is a private address
>(192.168.70.x.) and the External is a Live Internic-assigned IP
>address(208.168.50.x).
>

.....................

Robert Bergin

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Apr 2, 1999, 3:00:00 AM4/2/99
to
MS Proxy Server is installed here as well as MS Proxy Client.


Andrey Lazarev wrote in message <7dv5rl$fi9$1...@news.sovam.com>...

Robert Bergin

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Apr 2, 1999, 3:00:00 AM4/2/99
to
David,

I saw the technet articles about too many gateways ruining the soup.
The internal adapter has no gateway and all the internal addresses are
within the same subnet.

Thanks

Rob

D. Gager wrote in message <01be7c4d$0c73e340$e264a8c0@dgager>...
>Does the internal adapter in Server2 have a Gateway address entered? If so,
>I would remove that entry.
>--
>David Gager, MCP
>Network Support Specialist
>Educational Service District 112
>
>"When you have eliminated the impossible
>whatever remains, no matter how improbable,
>must be the solution." -Sherlock Holms
>
>Robert Bergin <ber...@nh1-wsbinc.com> wrote in article

><eEnh5D5e#GA.269@cppssbbsa03>...


>> I have an interested scenario. I have a two-NIC Server running NTS4 with
>> SP3. It is a classic Proxy layout. The Internal NIC is a private address
>> (192.168.70.x.) and the External is a Live Internic-assigned IP
>> address(208.168.50.x).
>>

Robert Bergin

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Apr 2, 1999, 3:00:00 AM4/2/99
to
DualIP,

Thanks I will try that out.

Rob


DualIP wrote in message <37038c34...@127.0.0.1>...


>If the proxy client is running on the same system configure it to use
>127.0.0.1 as a proxy
>
>DualIP
>
>
>On Wed, 31 Mar 1999 11:04:26 -0500, "Robert Bergin"
><ber...@nh1-wsbinc.com> wrote:
>

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