Internet Explorer must be configured to make Proxy settings per user.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-3430	DTBI367	SV-40555r1_rule	ECSC-1	Low

Description
This setting controls whether or not the Internet Explorer proxy settings are configured on a per-user or per-machine basis. If you enable this policy, users cannot set user specific proxy settings. They must use the zones created for all users of the computer. If you disable this policy or do not configure it, users of the same computer can establish their own proxy settings. This policy is intended to ensure that proxy settings apply uniformly to the same computer and do not vary from user to user.

Description

This setting controls whether or not the Internet Explorer proxy settings are configured on a per-user or per-machine basis. If you enable this policy, users cannot set user specific proxy settings. They must use the zones created for all users of the computer. If you disable this policy or do not configure it, users of the same computer can establish their own proxy settings. This policy is intended to ensure that proxy settings apply uniformly to the same computer and do not vary from user to user.

STIG	Date
Internet Explorer 9 Security Technical Implementation Guide	2015-03-26

Details

Check Text ( C-39323r1_chk )
The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer “Make proxy settings per-machine (rather than per user)” must be “Disabled”. Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings Criteria: If the value ProxySettingsPerUser is REG_DWORD = 1, this is not a finding.

Check Text ( C-39323r1_chk )

The policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer “Make proxy settings per-machine (rather than per user)” must be “Disabled”.

Procedure: Use the Windows Registry Editor to navigate to the following key: HKLM\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

Criteria: If the value ProxySettingsPerUser is REG_DWORD = 1, this is not a finding.

Fix Text (F-34429r1_fix)
Set the policy value for Computer Configuration -> Administrative Templates -> Windows Components -> Internet Explorer “Make proxy settings per-machine (rather than per user)” to “Disabled”.