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ISA 2006 does not prompt anonymous users for authentication

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ISA 2006 does not prompt anonymous users for authentica... - 11.Jun.2008 10:44:02 AM

ahassim

Posts: 19
Joined: 10.Jun.2008
Status: offline

I have recently set up an ISA 2006 server. I am having a problem with authentication whereby all anonymous users are being denied access. I want these users to be prompted for logon credentials - how do I go about doing this?

All AD authenticated users work 100%.

Regards,
Aadil

Post #: 1

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RE: ISA 2006 does not prompt anonymous users for authen... - 11.Jun.2008 5:00:00 PM

paulo.oliveira

Posts: 609
Joined: 3.Jan.2008
From: Amazonas, Brazil
Status: offline

Hello Aadil,

I do not recommend you to mark the check box "Require all users to authenticate", because as you seeing all anonymous access will be denied. Some applications, such as anti-virus programs, doesn�t support authentication.
You can create a rule and allow only an AD user set or all authenticated users, for internet access, for example and ISA will allow only this users to access internet.

quote:

I want these users to be prompted for logon credentials - how do I go about doing this?

Most of browsers pass the credentials of the logged on user, if the computer is joined to domain.

Regards,
Paulo Oliveira.

(in reply to ahassim)

Post #: 2

RE: ISA 2006 does not prompt anonymous users for authen... - 12.Jun.2008 2:07:51 AM

ahassim

Posts: 19
Joined: 10.Jun.2008
Status: offline

Hi Paul,

Thank you for your response.

I seem to have found where my problem was - it seems that IE 7 uses intergrated authentication which does not allow for this prompt to pop-up. After disabling this function (Enable Integrated Windows Authentication) in IE (Tools -> Internet Options -> Advanced) - the pop-up is now enabled.

Regards,
Aadil

(in reply to ahassim)

Post #: 3

RE: ISA 2006 does not prompt anonymous users for authen... - 12.Jun.2008 2:41:58 AM

elmajdal

Posts: 4964
Joined: 16.Sep.2004
From: Lebanese in Kuwait
Status: offline

mmmm Nice Tip !!

Thanks for the hint .

_____________________________

Tarek Majdalani

MS Forefront Edge Security MVP
Website : http://www.elmajdal.net/ISAServer
New Section : http://www.elmajdal.net/Win2k8

(in reply to ahassim)

Post #: 4

RE: ISA 2006 does not prompt anonymous users for authen... - 12.Jun.2008 7:38:05 AM

paulo.oliveira

Posts: 609
Joined: 3.Jan.2008
From: Amazonas, Brazil
Status: offline

Hi Aadil,

to make clear, I�m not Paul, I�m Paulo

, I�m from Brazil.

Thanks for giving us a feedback and for the great tip!

Regards,
Paulo Oliveira.

(in reply to ahassim)

Post #: 5

RE: ISA 2006 does not prompt anonymous users for authen... - 13.Jun.2008 10:07:39 AM

ahassim

Posts: 19
Joined: 10.Jun.2008
Status: offline

Hi Paulo,

Sorry, hope I did not offend you by calling you Paul.

I was quite amazed to find that it was Internet Explorer - I didn't even think of it in the beginning. Good thing I have a Microsoft AD/Desktop specialist around who pointed out that it may be the browser that could be causing it.

Regards,
Aadil

(in reply to paulo.oliveira)

Post #: 6

RE: ISA 2006 does not prompt anonymous users for authen... - 13.Jun.2008 10:45:18 AM