Computer-based authentication / authorization fails with Integrated Web Authentication (IWA)
Certain applications / User-Agents will perform authentication with their computer accounts. This is generally observed with Windows Vista and Windows 7. Computer accounts are similar to user accounts in several ways – they have a password, and they can belong to groups. However, by default, computer accounts belong only to the 'Domain Computers' group.
For example, the Windows Update agent may authenticate with the computer's account and result in forbidden/denied access :
If your organization's security policy allows computer authenticated accounts to access the Internet, the following policy should address the problem.
The 'Domain Computers' is available as a source Group object in the VPM's Web Access Layer, similar as other group objects. Hence, the CPL above can also be applied fom the VPM.
Do not use any IP-based surrogate such as Proxy-IP for authentication because the ProxySG may not reauthenticate user traffic within the cached duration. If you need to use an IP-based surrogate, use the user.login.log_out(yes) policy above.
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