RE: DNS Issue

  • From: "Thomas W Shinder" <tshinder@xxxxxxxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Sun, 16 Feb 2003 19:57:40 -0600

Hi Tom,

That's why I said you needed to test from a client on the external,
directly connected network ;-)

HTH,
Tom

Thomas W Shinder
www.isaserver.org/shinder 
ISA Server and Beyond: http://tinyurl.com/1jq1
Configuring ISA Server: http://tinyurl.com/1llp 


-----Original Message-----
From: Tom Mendelboim [mailto:tomerm1@xxxxxxx] 
Sent: Sunday, February 16, 2003 7:49 PM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: DNS Issue


http://www.ISAserver.org


I agree with you John but ISA should have at least contacted the router
asking it if it knows about that route. Obviously, depend on the router
technology, ISA might have known about it when I just plugged it in. 

After explaining Microsoft what happened, they admitted that using
network monitor that comes with Windows 2000 does not show these packets
because of a "featured bug". When using other sniffers they could see
these packets being refused by the router. 

I won't use network monitor again...

Thanks again,

Tom

-----Original Message-----
From: John Tolmachoff [mailto:isalist@xxxxxxxxxxxx] 
Sent: Saturday, February 15, 2003 8:11 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: DNS Issue

http://www.ISAserver.org


> The problem was my router. I did not have it configured to route
packets
> to the correct subnet! The bizarre part of it is that the external
> interface of the ISA did not show any packets trying to go out. Once I
> made the router change, I could see the packets going. Does ISA
supposed
> to do that???

ISA in its more elementry form is a router; there it needs to know what
to
do with packets it receives. Since the next hop, the edge router did not
know about the segments, ISA kept it from going anywhere.

Glad it is working now.

John Tolmachoff MCSE, CSSA
IT Manager, Network Engineer
RelianceSoft, Inc.
Fullerton, CA  92835
www.reliancesoft.com





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