Inline NAC Design Procedures

However, the closer the NAC Controller is placed to the edge of the network, the more NAC Controllers are required on the network, increasing NAC deployment cost and complexity. Conversely, when moving the NAC Controller towards the core of the network, fewer NAC Controllers are required, decreasing NAC deployment cost and complexity, but also decreasing the level of security.

For implementing NAC on wired and wireless LANs, it is recommended that the Layer 2 NAC Controller is positioned between the access layer and distribution layer before the first routed hop in the network. As an alternative, the NAC Controller may be positioned deeper into the network after the first routed hop using the Layer 3 configuration. The Layer 3 NAC Controller can also be positioned after a VPN concentrator or WAN connection to implement NAC for remote users.

Unlike the out‐of‐band NAC design, the implementation of remediation and/or MAC (network) registration does not affect the location of the NAC Controller. The NAC Controller will appropriately intercept web traffic for the purpose of remediation and registration.

Lastly, it should be understood that some advantages exist with the deployment of a Layer 2 NAC Controller over a Layer 3 NAC Controller, which may affect the decision of how NAC Controllers are positioned. While a Layer 2 NAC Controller always knows the MAC address of the downstream connected end‐system, the Layer 3 NAC Controller may not be able to determine the MAC address of a downstream end‐system (denoted as “Unknown” in NAC Manager.) Techniques such as NetBIOS lookups and DHCP snooping are implemented to attempt to resolve the IP address of the downstream connected end‐systems; however, scenarios exist where the IP address of the downstream end‐system may not be determined.

The MAC address of a downstream end‐system will be determined by the NAC Controller in the following scenarios:

•End‐systems support NetBIOS and a host firewall does not drop inbound NetBIOS requests for the LAN connection.

•DHCP is implemented and the DHCP server exists upstream from the NAC Controller.

Since the Layer 3 NAC Controller may not be able to determine the MAC address of a downstream end‐system, “Lock MAC” and MAC overrides are not applicable to Layer 3 NAC Controllers. Furthermore, MAC (network) registration may not be implemented when the MAC address of a downstream connected end‐system is unknown. In this case, the end‐system is assigned the Security Domain’s default NAC configuration.

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Enterasys Networks 9034385 manual Inline NAC Design Procedures
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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.

Another critical aspect of the 9034385 is its support for high-speed connectivity. The device features multiple gigabit Ethernet ports, providing sufficient bandwidth for data-intensive applications commonly used in enterprise environments. The high-speed connections ensure that users can access applications and data quickly and reliably, minimizing latency issues that can affect productivity.

In terms of management, Enterasys Networks has equipped the 9034385 with advanced monitoring and diagnostic tools. These capabilities allow network administrators to track performance metrics, identify potential issues proactively, and make informed decisions about network resource allocation. The inclusion of SNMP (Simple Network Management Protocol) facilitates seamless integration with network management systems, providing comprehensive oversight of network health and performance.

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.

The Enterasys Networks 9034385 also stands out due to its seamless integration with cloud-based services and support for virtualization technologies. This compatibility enables organizations to adopt flexible architectures and manage their resources more efficiently. Additionally, the device is designed with scalability in mind, allowing businesses to expand their networks without significant hardware changes or disruptions.

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.
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