Scenario 4: VPN Remote Access

Figure 3-6 VPN Remote Access

 

Enterasys

NAC Functions

NAC Manager

 

 

 

 

 

1

Detect

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Authenticate

Remediation

 

 

 

 

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Assess

 

 

 

 

 

 

 

 

4

Authorize

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5

Remediate

Role=Quarantine NAC

4 Controller

(inline appliance)

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5

3

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3

VPN Concentrator

Assessment

Server

Scenario 4 Implementation

In the VPN remote access use scenario, the five NAC functions are implemented in the following manner with the deployment of the NAC Controller for inline network access control.

1.Detection ‐ The userʹs end‐system successfully establishes a VPN tunnel with the VPN concentrator, and the VPN concentrator transmits unencrypted data traffic onto the network that traverses the NAC Controller. This traffic is sourced from an IP address not previously seen by the controller.

2.Authentication ‐ Authentication is most likely disabled altogether on the NAC Controller, trusting that the downstream VPN concentrator authenticated the connecting user.

3.Assessment ‐ The NAC Controller requests an assessment of the end‐system according to predefined security policy parameters. The assessment can be agent‐based or agent‐less, and is executed locally by the NAC Controllerʹs assessment functionality and/or remotely by a pool of assessment servers.

4.Authorization ‐ Once authentication and assessment are complete, the NAC Controller allocates the appropriate network resources to the end‐system based on authentication and/or assessment results. This is implemented locally on the NAC Controller by assigning a policy to traffic sourced from the end‐system. If authentication fails and/or the assessment results indicate a noncompliant end‐system, the NAC Controller can either deny the end‐system access to the network, or quarantine the end‐system by assigning a particular policy on the controller.

3-12 Use Scenarios

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Enterasys Networks 9034385 manual Scenario 4 Implementation, VPN Remote Access Enterasys

9034385 specifications

Enterasys Networks 9034385 is a powerful networking component designed to enhance enterprise-level connectivity and ensure robust network management capabilities. This device offers a wide range of features that cater to the demanding requirements of modern businesses, focusing on performance, reliability, and security.

One of the main features of the Enterasys Networks 9034385 is its advanced Layer 2 and Layer 3 switching capabilities, which enable efficient data processing and robust network performance. With support for various VLAN configurations, the device allows organizations to segment their networks effectively, leading to improved security and better traffic management.

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Security is a paramount consideration for the 9034385, which incorporates advanced security protocols to protect sensitive data. Features such as port security, DHCP snooping, and dynamic ARP inspection help safeguard the network against unauthorized access and cyber threats. Furthermore, the device supports authentication mechanisms like 802.1X, ensuring that only authorized users and devices can connect to the network.

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Overall, the Enterasys Networks 9034385 is a versatile and powerful networking solution ideal for enterprises looking to enhance their network infrastructure while ensuring performance, security, and ease of management. The combination of advanced features and technologies makes it a valuable asset for businesses of all sizes striving for efficient and reliable connectivity.