generate qr code c# mvc Lesson 2: Configuring Network Access Protection in Visual C#

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Lesson 2: Configuring Network Access Protection
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Restricted Access Enables NAP enforcement. Noncompliant clients will be
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assigned an IP address configuration that grants access only to servers listed in the remediation server group. Drop Client Packet Ignores DHCP requests from noncompliant clients. Windows clients will then automatically assign themselves an Automatic Private IP Addressing (APIPA) address in the 169.254.0.0/16 network, where they will be able to communicate only with other APIPA computers.
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Configuring NAP on a DHCP server
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Enabling NAP on a Single DHCP Scope To enable NAP for a single DHCP scope, follow these steps: 1. In Server Manager, right-click Roles\DHCP Server\<Computer Name>\IPv4\<Scope Name>, and then choose Properties. 2. In the Network Access Protection tab, select Enable For This Scope. Then, click OK. Repeat these steps for each scope that you want to protect using NAP. For more information, read 4, Installing and Configuring a DHCP Server.
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Configuring Windows Firewall and Network Access Protection
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Configuring VPN Enforcement
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Configuring VPN enforcement requires the following high-level steps: 1. Use the Configure NAP Wizard to configure the connection request policy, network policy, and NAP health policy, as described in the section of this chapter entitled Using the Configure NAP Wizard. Although you can configure these elements individually, it is much easier to use the wizard. 2. Configure remediation servers to define the computers that noncompliant clients can access. For more information, read Configuring Remediation later in this lesson. 3. Configure your VPN servers to perform PEAP-based authentication (either PEAP-MSCHAP v2 or PEAP-TLS) and submit RADIUS requests to your NAP server. For more information, refer to 7, Connecting to Networks. 4. If you plan to use certificates for authentication (using either PEAP-TLS or EAP-TLS), deploy a PKI such as the Certificate Services role and distribute certificates to client computers using a mechanism such as Active Directory autoenrollment. For more information, refer to 7, Connecting to Networks. If you plan to use PEAP-MS-CHAP v2 domain authentication, use a PKI to issue server certificates to the NAP server. 5. Enable the NAP Remote Access Quarantine Enforcement Client and start the NAP service on NAP-capable client computers. For more information, read Configuring NAP Clients in the next section of this chapter.
Configuring NAP Components
Depending on the NAP enforcement type and your organization s specific requirements, you will need to configure SHVs, NAP client settings, and health requirement policies. Additionally, during the initial deployment phase, you will need to configure NAP for monitoring only. The sections that follow describe these tasks in detail.
Configuring NAP Clients
After configuring the NPS server, you must configure client computers for NAP. The easiest way to do this is to use GPO settings in the Computer Configuration\Policies\Windows Settings\Security Settings\Network Access Protection\NAP Client Configuration node. You can configure client NAP settings using the three subnodes:
Enforcement Clients You must enable one policy to configure clients to use that enforce-
ment type.
User Interface Settings
Configure the User Interface Settings policy to provide customized text (and, optionally, an image) that users will see as part of the NAP client interface.
Lesson 2: Configuring Network Access Protection
Health Registration Settings Use the Request Policy subnode to configure cryptographic settings for NAP clients (the default settings are typically fine). Use the Trusted Server Group subnode to configure an HRA for IPsec NAP clients to use.
Additionally, you must start the Network Access Protection Agent service on all client computers. You can do this manually, but it is easiest if you use Group Policy settings. In your GPO, select the Computer Configuration\Policies\Windows Settings\Security Settings\System Services node. Then, double-click the Network Access Protection Agent service. Define the policy and set it to start automatically, as shown in Figure 8-10.
Figure 8-10 Starting the Network Access Protection Agent service automatically
Finally, to allow managed clients to use the default Windows SHV, you must enable Security Center by enabling the Computer Configuration\Policies\Administrative Templates\Windows Components\Security Center\Turn On Security Center policy.
NOTE
Configuring a working NAP environment
NAP configuration is complex, and this lesson has shown you many ways to configure NAP. Be sure to complete the practice at the end of this lesson to complete a NAP implementation from start to finish.
You can quickly verify a client s configuration by running the following command at a command prompt:
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