Firewalls
Re: Help to remove blocking of MS outlook through ISA 2004 Jun 23 2008 09:20PM
Faris Mlaeb (farisnt yahoo com) (2 replies)
Re: Help to remove blocking of MS outlook through ISA 2004 Jun 27 2008 01:48PM
Qaisar Naseem (qaisarn gmail com) (1 replies)
RE: Help to remove blocking of MS outlook through ISA 2004 Jun 27 2008 02:57PM
Thor \(Hammer of God\) (thor hammerofgod com) (1 replies)
RE: Help to remove blocking of MS outlook through ISA 2004 Jun 30 2008 11:55PM
Faris Mlaeb (farisnt yahoo com)
RE: Help to remove blocking of MS outlook through ISA 2004 Jun 25 2008 06:49PM
Thor \(Hammer of God\) (thor hammerofgod com) (1 replies)
RE: Help to remove blocking of MS outlook through ISA 2004 Jun 26 2008 04:25PM
Faris Mlaeb (farisnt yahoo com) (1 replies)
RE: Help to remove blocking of MS outlook through ISA 2004 Jun 27 2008 04:45AM
Thor \(Hammer of God\) (thor hammerofgod com)
Sorry, but if you had to create an All outbound from int to ext, then
you've done something wrong on your rule. The firewall client is great,
but it is not a necessity -- of course, you would want it to ensure
authenticated access to rules based on domain membership for non-web
traffic, but that's another story.

ISA blocks all traffic by default. If you allow POP3 from the client to
the server, it works, and without the need for adding the "enable" tag
in the FWC config (without question).

Least Privilege dictates that you only allow what you need, only to
where you need it, and only to those that need it. Enabling outlook.exe
itself for all access is overkill and unnecessary. If you POP3 rule
didn't work, you either had an authentication problem, or didn't create
the rule properly (like you used POP3 Server instead of POP3 or
something like that). The logs will tell you everything you need to
know in order to troubleshoot that.

t

-----------

Check out Tim Mullen's "Microsoft Ninjitsu" training at Blackhat Vegas
2008.
There are also some other great NGS classes lead by world-class
researchers and trainers available.

http://www.blackhat.com/html/bh-usa-08/train-bh-usa-08-tm-ms-bbe.html

From: listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]]
On Behalf Of Faris Mlaeb
Sent: Thursday, June 26, 2008 9:25 AM
To: firewalls (at) securityfocus (dot) com [email concealed]; Thor (Hammer of God)
Subject: RE: Help to remove blocking of MS outlook through ISA 2004

Hi
As it seem .. and even if he dont have Firewall Client installed, he
should install it
I have Such a problem where client in my network have a problem can not
connect to a POP3 Server using MS Outlook
I had Create a Rule that allow POP3 and also a Rule to Allow ALLOUTBOUND
TRAFFIC From Internal To External To All Users, But as it seem that ISA
Server is configured to Block the Connection for Outlook what ever the
Portocol that is being sent to the external as its in ISA Server ((
OutLook disable 1))
Anyway
As Qaisar Naseem says ((Even I created a firewall rule to allow all
outbound traffic to external, but unable to solve the problem)), so it
seem that enabling so will help
Anyway .. do you have a Better method for enabling this and Allowing the
outlook to connect to the external without having to change it from ISA

Thanks alot

--- On Wed, 6/25/08, Thor (Hammer of God) <thor (at) hammerofgod (dot) com [email concealed]> wrote:

From: Thor (Hammer of God) <thor (at) hammerofgod (dot) com [email concealed]>
Subject: RE: Help to remove blocking of MS outlook through ISA
2004
To: firewalls (at) securityfocus (dot) com [email concealed]
Date: Wednesday, June 25, 2008, 11:49 AM

A couple of things:

One, you don't know that he is running a firewall client.
Secondly it is never recommended to just enable full access to an
overall application when you can more finely restrict access based on
protocol. The client may simply be using POP3 -- it would be silly to
just "allow Outlook" as an application to all of your firewall clients
when you can just allow POP3 (or whatever it is) to only the clients
that need it.

t

From: listbounce (at) securityfocus (dot) com [email concealed]
[mailto:listbounce (at) securityfocus (dot) com [email concealed]] On Behalf Of Faris Mlaeb
Sent: Monday, June 23, 2008 2:20 PM
To: Thor (Hammer of God); Qaisar Naseem;
firewalls (at) securityfocus (dot) com [email concealed]
Subject: Re: Help to remove blocking of MS outlook through ISA
2004

HI

This is normal for ISA and you can fix this by going to:

Open the ISA Server Console and expand the Configuration, and
select General, and then Click on "Define Firewall Client Settings", You
will have a new Window for the "Firewall Client Settings"
Click on the Application Tab and from the list select Outlook
You will notice that its like this:
Outlook Disable 1
change the value to be
Outlook Disable 0

and on the Firewall client on the user PC make sure that you
click on Detect Now Or simply restart your Computer

This work for me perfect

Have a nice time

Note that if the value is not present .. then simply create it

Faris Mlaeb

Technical Manager

Network Administrator

----- Original Message ----
From: Thor (Hammer of God) <thor (at) hammerofgod (dot) com [email concealed]>
To: Qaisar Naseem <qaisarn (at) gmail (dot) com [email concealed]>;
firewalls (at) securityfocus (dot) com [email concealed]
Sent: Monday, June 23, 2008 5:33:33 PM
Subject: RE: Help to remove blocking of MS outlook through ISA
2004

What protocols are you using to connect to the server? I'm
assuming you are talking about an internal Outlook client connecting to
an external server. What kind of ISA client is the host? Are you using
SNAT or FWC? A little infoz, please.

t

-----------

Check out Tim Mullen's "Microsoft Ninjitsu" training at Blackhat
Vegas 2008.
There are also some other great NGS classes lead by world-class
researchers and trainers available.

http://www.blackhat.com/html/bh-usa-08/train-bh-usa-08-tm-ms-bbe.html
<http://www.blackhat.com/html/bh-usa-08/train-bh-usa-08-tm-ms-bbe.html>

From: listbounce (at) securityfocus (dot) com [email concealed]
[mailto:listbounce (at) securityfocus (dot) com [email concealed]] On Behalf Of Qaisar Naseem
Sent: Friday, June 20, 2008 9:02 AM
To: firewalls (at) securityfocus (dot) com [email concealed]
Subject: Help to remove blocking of MS outlook through ISA 2004

Hi,

I am using Windows server 2003 network with ISA 2004 as proxy. I
am having problem in passing MS outlook requests. Even I created a
firewall rule to allow all outbound traffic to external, but unable to
solve the problem. Outlook configuration is quite OK as when I by pass
proxy, it works fine.

--
Qaisar Naseem
Network Admin
Express News TV
+923457263848

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<div class=Section1>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Sorry, but if you had to create an All outbound from int to ext,
then you've done something wrong on your rule.  The firewall client is great,
but it is not a necessity -- of course, you would want it to ensure
authenticated access to rules based on domain membership for non-web traffic,
but that's another story.</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>ISA blocks all traffic by default.  If you allow POP3 from the
client to the server, it works, and without the need for adding the
"enable" tag in the FWC config  (without question).  </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Least Privilege dictates that you only allow what you need, only
to where you need it, and only to those that need it.  Enabling outlook.exe
itself for all access is overkill and unnecessary.  If you POP3 rule didn't
work, you either had an authentication problem, or didn't create the rule
properly (like you used POP3 Server instead of POP3 or something like that). 
The logs will tell you everything you need to know in order to troubleshoot
that.</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>t</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>-----------</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Check out Tim Mullen's "Microsoft Ninjitsu" training
at Blackhat Vegas 2008. <br>
There are also some other great NGS classes lead by world-class researchers and
trainers available.</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>http://www.blackhat.com/html/bh-usa-08/train-bh-usa-08-tm
-ms-bbe.html</span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span></p>

<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>

<div>

<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>

<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span><
/b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]] <b>On Behalf
Of </b>Faris Mlaeb<br>
<b>Sent:</b> Thursday, June 26, 2008 9:25 AM<br>
<b>To:</b> firewalls (at) securityfocus (dot) com [email concealed]; Thor (Hammer of God)<br>
<b>Subject:</b> RE: Help to remove blocking of MS outlook through ISA 2004</span></p>

</div>

</div>

<p class=MsoNormal> </p>

<table class=MsoNormalTable border=0 cellspacing=0 cellpadding=0>
<tr>
<td valign=top style='padding:0in 0in 0in 0in'>
<p align=center style='text-align:center'> </p>
<p>Hi <br>
As it seem .. and even if he dont have Firewall Client installed, he should
install it <br>
I have Such a problem where client in my network have a problem can not
connect to a POP3 Server using MS Outlook <br>
I had Create a Rule that allow POP3 and also a Rule to Allow ALLOUTBOUND
TRAFFIC From Internal To External To All Users, But as it seem that ISA
Server is configured to Block the Connection for Outlook what ever the
Portocol that is being sent to the external as its in ISA Server ((
OutLook disable   1))<br>
Anyway<br>
As Qaisar Naseem says ((Even I created a firewall rule to allow all outbound
traffic to external, but unable to solve the problem)), so it seem that
enabling so will help<br>
Anyway .. do you have a Better method for enabling this and Allowing the
outlook to connect to the external without having to change it from ISA</p>
<p>Thanks alot<br>
<br>
<br>
--- On <b>Wed, 6/25/08, Thor (Hammer of God) <i><thor (at) hammerofgod (dot) com [email concealed]></i></b>
wrote:</p>
<blockquote style='border:none;border-left:solid #1010FF 1.5pt;padding:0in 0in 0in 4.0pt;
margin-left:3.75pt;margin-top:5.0pt;margin-bottom:5.0pt'>
<p class=MsoNormal style='margin-bottom:12.0pt'>From: Thor (Hammer of God)
<thor (at) hammerofgod (dot) com [email concealed]><br>
Subject: RE: Help to remove blocking of MS outlook through ISA 2004<br>
To: firewalls (at) securityfocus (dot) com [email concealed]<br>
Date: Wednesday, June 25, 2008, 11:49 AM</p>
<div id=yiv556117278>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>A
couple of things:</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>One,
you don't know that he is running a firewall client.  Secondly it is
never recommended to just enable full access to an overall application when
you can more finely restrict access based on protocol.   The client
may simply be using POP3 -- it would be silly to just "allow
Outlook" as an application to all of your firewall clients when you can
just allow POP3 (or whatever it is) to only the clients that need it.  </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>t</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span><
/b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]] <b>On
Behalf Of </b>Faris Mlaeb<br>
<b>Sent:</b> Monday, June 23, 2008 2:20 PM<br>
<b>To:</b> Thor (Hammer of God); Qaisar Naseem; firewalls (at) securityfocus (dot) com [email concealed]<br>
<b>Subject:</b> Re: Help to remove blocking of MS outlook through ISA 2004</span></p>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p>
<div>
<p>HI</p>
<p>This is normal for ISA and you can fix this by going to:</p>
<p> </p>
<p>Open the ISA Server Console and expand the Configuration, and select
General, and then Click on "Define Firewall Client Settings", You
will have a new Window for the "Firewall Client Settings"<br>
Click on the Application Tab and from the list select Outlook<br>
You will notice that its like this:<br>
Outlook  Disable  1<br>
change the value to be <br>
Outlook  Disable  0</p>
<p>and on the Firewall client on the user PC  make sure that you click
on Detect Now Or simply restart your Computer</p>
<p>This work for me perfect</p>
<p>Have a nice time</p>
<p> </p>
<p> </p>
<p>Note that if the value is not present .. then  simply create it</p>
<p> </p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><br>
 </p>
</div>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><b><span style='font-family:"Calibri","sans-serif";
color:#0000BF'>Faris Mlaeb</span></b></p>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><strong><span style='font-family:"Calibri","sans-serif";
color:#0000BF'>Technical Manager</span></strong></p>
<p class=MsoNormal align=center style='mso-margin-top-alt:auto;mso-margin-bottom-alt:
auto;text-align:center'><strong><span style='font-family:"Calibri","sans-serif";
color:#0000BF'>Network Administrator</span></strong></p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'> </p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;margin-bottom:12.0pt'>-----
Original Message ----<br>
From: Thor (Hammer of God) <thor (at) hammerofgod (dot) com [email concealed]><br>
To: Qaisar Naseem <qaisarn (at) gmail (dot) com [email concealed]>; firewalls (at) securityfocus (dot) com [email concealed]<br>
Sent: Monday, June 23, 2008 5:33:33 PM<br>
Subject: RE: Help to remove blocking of MS outlook through ISA 2004</p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>What
protocols are you using to connect to the server?  I'm assuming you are
talking about an internal Outlook client connecting to an external
server.  What kind of ISA client is the host?  Are you using SNAT
or FWC?   A little infoz, please.</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>t</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>-----------</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'>Check
out Tim Mullen's "Microsoft Ninjitsu" training at Blackhat Vegas
2008. <br>
There are also some other great NGS classes lead by world-class researchers
and trainers available.</span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'><a href="http://www.blackhat.com/html/bh-usa-08/train-bh-usa-08-tm-ms-bbe.h
tml"><u><span style='color:blue'>http://www.blackhat.com/html/bh-usa-08/train-bh-usa-0
8-tm-ms-bbe.html</span></u></a></span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D
'> </span></p>
<div style='border:none;border-left:solid blue 1.5pt;padding:0in 0in 0in 4.0pt'>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span><
/b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>
listbounce (at) securityfocus (dot) com [email concealed] [mailto:listbounce (at) securityfocus (dot) com [email concealed]] <b>On
Behalf Of </b>Qaisar Naseem<br>
<b>Sent:</b> Friday, June 20, 2008 9:02 AM<br>
<b>To:</b> firewalls (at) securityfocus (dot) com [email concealed]<br>
<b>Subject:</b> Help to remove blocking of MS outlook through ISA 2004</span></p>
</div>
</div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>Hi,</p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'> </p>
</div>
<div>
<p class=MsoNormal style='mso-margin-top-alt:auto;mso-margin-bottom-alt:auto'>I
am using Windows server 2003 network with ISA 2004 as proxy. I am having
problem in passing MS outlook requests. Even I created a firewall rule to
allow all outbound traffic to external, but unable to solve the problem.
Outlook configuration is quite OK as when I by pass proxy, it works fine.<br>
<br>
-- <br>
Qaisar Naseem<br>
Network Admin<br>
Express News TV<br>
+923457263848 </p>
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