RE: ISA 2004 blocking XP local loopback

  • From: "Eric Poole" <EPoole@xxxxxxxxxxxxxxxxxxxx>
  • To: "[ISAserver.org Discussion List]" <isalist@xxxxxxxxxxxxx>
  • Date: Mon, 16 Jan 2006 09:25:43 -0800

Hi Tom.
I don't see your reply.  Do you mind sending again?
_______________________________________________
Eric Poole, CISSP
Senior Information Security Analyst
Community Medical Centers
1140 "T" Street, Fresno, California 93721
559-459-6784 (phone) 559-459-2045 (fax)
 

-----Original Message-----
From: Thomas W Shinder [mailto:tshinder@xxxxxxxxxxx] 
Sent: Monday, January 16, 2006 8:54 AM
To: [ISAserver.org Discussion List]
Subject: [isalist] RE: ISA 2004 blocking XP local loopback

http://www.ISAserver.org

Hi Eric,

Try what I said.

Thomas W Shinder, M.D.
Site: www.isaserver.org
Blog: http://spaces.msn.com/members/drisa/
Book: http://tinyurl.com/3xqb7
MVP -- ISA Firewalls
**Who is John Galt?**

 

> -----Original Message-----
> From: Eric Poole [mailto:EPoole@xxxxxxxxxxxxxxxxxxxx]
> Sent: Monday, January 16, 2006 10:49 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org
> 
> Ok, here's the results.
> 
> The del command got rid of a ton of scripts from the temporary 
> internet files.
> 
> After launching IE and running the dir command I get file not found.
> _______________________________________________
> Eric Poole, CISSP
> Senior Information Security Analyst
> Community Medical Centers
> 1140 "T" Street, Fresno, California 93721
> 559-459-6784 (phone) 559-459-2045 (fax)
>  
> 
> -----Original Message-----
> From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
> Sent: Saturday, January 14, 2006 12:36 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org
> 
> I might have considered that if the error was not IE-generated as 
> opposed to some AX control or user-side script error.
> 
> Here's the upshot...
> IE attempts to make a proxy connection for any IP address (yes, 
> including 127/8) when it's configured as either:
> 1. "auto-detect" or "config url" and either
>   - no script is received
>   - the script forces this behavior
> 2. "use a proxy server" and "bypass" is unchecked
> 
> Eric also stated that IE was configured to obtain the script from 
> http://fchap082.cmcinet.org:8080/array.dll?Get.Routing.Script.
> This is why I was interested in the contents of the script.
> 
> I did lie, though - the file to be searched for and deleted was not 
> "array.dll", but "array*.script".
> 
> Eric, could you retry with that filename?
> 
> --------------------------------------------
> 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: Saturday, January 14, 2006 11:17 AM
> To: [ISAserver.org Discussion List]
> Subject: RE: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> Eric stated he was connecting to a database via IE.  While IE is the 
> client, there still needs to be some kind of interface with the 
> database, most likely a user or system DSN.  And while the command may

> not have worked it's 1) easy to execute and 2) easy to revert from if 
> it doesn't work.
>  
> Nothing wrong with testing. :)  Afterall, even if it doesn't work, you

> now know WinHTTP isn't a problem, which allows you to remove it with 
> certainty from the realm of possible causes.
>  
> 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
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE 
> PROPRIETARY MATERIAL and is thus for use only by the intended 
> recipient. If you received this in error, please contact the sender 
> and delete the e-mail and its attachments from all computers.
> 
> ________________________________
> 
> From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
> Sent: Sat 1/14/2006 12:11 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> 
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> IE still uses WinInet and proxycfg only affects WinHTTP.
> That commands while useful for WinHTTP-based clients (BITS, OL2K3, 
> etc.) and is completely useless for IE-based connections.
> 
> --------------------------------------------
> Jim Harrison
> MCP(NT4, W2K), A+, Network+, PCG
> http://isaserver.org/Jim_Harrison/
> http://isatools.org <http://isatools.org/> Read the help / books / 
> articles!
> --------------------------------------------
> 
> -----Original Message-----
> From: Young, Gerald G [mailto:Gerald.Young@xxxxxxxxxx]
> Sent: Friday, January 13, 2006 1:06 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> Eric,
> 
> Here's one other thing to try.  At the command prompt, execute the 
> following command:
> 
> proxycfg -p <web proxy ip:port>
> 
> If that doesn't work, use the following command to reset it:
> 
> proxycfg -d
> 
> 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
> 
> THIS COMMUNICATION MAY CONTAIN CONFIDENTIAL AND/OR OTHERWISE 
> PROPRIETARY MATERIAL and is thus for use only by the intended 
> recipient. If you received this in error, please contact the sender 
> and delete the e-mail and its attachments from all computers.
> -----Original Message-----
> From: Eric Poole [mailto:EPoole@xxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 3:53 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> Hmmm, here's what I get, keep in mind that everything else works like 
> it should.
> 
> When I type the del command I get "Could Not Find C:\*array.dll*"
> 
> After I reload the script and type the dir command I get "File Not 
> Found"
> 
> Same thing if I change it to "Automatically detect proxy server" and 
> type dir, I get "File Not Found".
> 
> Like I said, everything else is working as it should.  It has to be 
> getting the correct script changes.  I can see the traffic change from

> one ISA to the next as I change script settings.
> 
> 
> -----Original Message-----
> From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 12:27 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> Nope - that won't work in this case.
> 
> Eric, do you know for certain that the browser is getting the wpad 
> script?
> You can tell by:
> 1. close all IE sessions
> 2. open a cmd window
> 3. type 'del \*array.dll* /s'
> 4. open IE and retry the connection
> In the cmd window type 'dir \*array.dll* /s'
> 
> ..do you see any new scripts?
> -------------------------------------------------------
>    Jim Harrison
>    MCP(NT4, W2K), A+, Network+, PCG
>    http://isaserver.org/Jim_Harrison/
>    http://isatools.org <http://isatools.org/> 
>    Read the help / books / articles!
> -------------------------------------------------------
> 
> 
> -----Original Message-----
> From: Mark Morgan [mailto:MMorgan@xxxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 12:20
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> 
> http://support.microsoft.com/kb/262981/?sd=RMVP
> 
> Thank You
> Mark J Morgan
> Palm Drive Hospital
> 501 Petaluma Ave. Sebastopol, Ca. 95472
> Email:    mmorgan@xxxxxxxxxxxxxxxxxxxxx
> Voice:    (707) 829-4242
> Fax:       (707) 829-4112
> Mobile    (707) 849-5576
> 
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> 
> -----Original Message-----
> From: Eric Poole [mailto:EPoole@xxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 12:02 PM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> Oops, sorry.
> "Use automatic configuration script" is checked and the default 
> address that ISA creates is in for the address.
> Example - ISA 2004 -
> http://fchap082.cmcinet.org:8080/array.dll?Get.Routing.Script
> 
> -----Original Message-----
> From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 11:57 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> ..and the proxy settings?
> 
> 
> -------------------------------------------------------
>    Jim Harrison
>    MCP(NT4, W2K), A+, Network+, PCG
>    http://isaserver.org/Jim_Harrison/
>    http://isatools.org <http://isatools.org/> 
>    Read the help / books / articles!
> -------------------------------------------------------
> 
> 
> -----Original Message-----
> From: Eric Poole [mailto:EPoole@xxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 11:32
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> It's a local database that is accessed via http://127.0.0.1:8080 
> <http://127.0.0.1:8080/>  in IE.
> _______________________________________________
> Eric Poole, CISSP
> Senior Information Security Analyst
> Community Medical Centers
> 1140 "T" Street, Fresno, California 93721
> 559-459-6784 (phone) 559-459-2045 (fax)
> 
> 
> -----Original Message-----
> From: Jim Harrison [mailto:Jim@xxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 11:08 AM
> To: [ISAserver.org Discussion List]
> Subject: [isalist] RE: ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> What is the application; IE, Firefox, etc.?
> What are the proxy settings on that app?
> 
> 
> -------------------------------------------------------
>    Jim Harrison
>    MCP(NT4, W2K), A+, Network+, PCG
>    http://isaserver.org/Jim_Harrison/
>    http://isatools.org <http://isatools.org/> 
>    Read the help / books / articles!
> -------------------------------------------------------
> 
> 
> -----Original Message-----
> From: Eric Poole [mailto:EPoole@xxxxxxxxxxxxxxxxxxxx]
> Sent: Friday, January 13, 2006 10:15
> To: [ISAserver.org Discussion List]
> Subject: [islist] ISA 2004 blocking XP local loopback
> 
> http://www.ISAserver.org <http://www.ISAserver.org/>
> 
> 
> Ok, I've been looking for the answer to this for about 45min. 
>  Why would
> ISA 2004 block a workstation from getting to 127.0.0.1?  Same 
> workstation going through ISA 2000 is able to access it's local 
> loopback.  Someone enlighten me please!
> 
> _______________________________________________
> Eric Poole, CISSP
> Senior Information Security Analyst
> Community Medical Centers <http://communitymedical.org/> 1140 "T"
> Street, Fresno, California 93721
> 559-459-6784 (phone) 559-459-2045 (fax)
> 
> 
> 
> 
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