RE: ISA Server DNS Caching
- From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
- To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
- Date: Thu, 19 Jan 2006 11:15:42 -0800
..of course.
Install ISA in an NDS environment and it blocks everything...
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Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
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-----Original Message-----
From: Thor (Hammer of God) [mailto:thor@xxxxxxxxxxxxxxx]
Sent: Thursday, January 19, 2006 11:02
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: ISA Server DNS Caching
http://www.ISAserver.org
NDS behaviors? You integrate with Novell now?
t
-----
"I'll see your Llama and up you a Badger."
John T
----- Original Message -----
From: "Jim Harrison" <Jim@xxxxxxxxxxxx>
To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
Sent: Thursday, January 19, 2006 9:44 AM
Subject: [isalist] RE: ISA Server DNS Caching
http://www.ISAserver.org
ISA - what; 2000 or 2004?
Their NDS behaviors are quite different.
-------------------------------------------------------
Jim Harrison
MCP(NT4, W2K), A+, Network+, PCG
http://isaserver.org/Jim_Harrison/
http://isatools.org
Read the help / books / articles!
-------------------------------------------------------
-----Original Message-----
From: Young, Gerald G [mailto:Gerald.Young@xxxxxxxxxx]
Sent: Thursday, January 19, 2006 09:34
To: [ISAserver.org Discussion List]
Subject: [isalist] ISA Server DNS Caching
http://www.ISAserver.org
I'm trying to get a better understanding of how the ISA Server deals with
DNS queries and caching.
From what I've been able to discern, ISA Server will not use the local hosts
file on the system (this configurable?) and instead grabs the record from
the DNS server. However, changes made to the DNS server that propagate out,
and are then returning the updated record through NSLOOKUP on the box for
all DNS servers configured in the TCP/IP stack do not take immediately. The
ISA logs still show the old IP address being used. Executing ipconfig
/flushdns doesn't work, either. After about 15 minutes or so, ISA starts
using the new DNS record.
This indicates that caching is going on someplace but I haven't been able to
find any additional information on how or where ISA caches DNS records, nor
can I find out how to clear that cache? Service restart, perhaps?
Any insight will be greatly appreciated.
Cordially yours,
Jerry G. Young II
MCSE (4.0/W2K)
Atlanta EES Implementation Team Lead
HHS Engineering
Unisys
11493 Sunset Hills Rd.
Reston, VA 20190
Office: 703-579-2727
Cell: 703-625-1468
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