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407 Authentication error.

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407 Authentication error. - 13.Oct.2005 4:58:00 PM   


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Joined: 22.Apr.2005
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I am having a problem with ISA 2004 and authentication of users in another domain. We have an Active Directory forest with 3 domains. My ISA server 2004 is located in my location. We have users onsite from our headquarters location (one of the other domains). When the users are here their browser is configured to use our proxy. However, the ISA 2004 server keeps prompting them for credentials even though these users are in an AD group that is applied to the Internet access rule I have setup. My users can get to the Internet through this rule.

If I monitor the traffic, I see the traffic using the correct rule but the user is presented as anonymous.

However, if I install the firewall client software on their pc and unset the browser proxy settings everything works properly.

Does anyone have any ideas on why it will not authenticate the users without the firewall client.

The users all have Windows XP Pro and IE 6 SP1.

Post #: 1

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