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  4. AMLS-L2-000160 – The Arista Multilayer Switch must authenticate 802.1X connected devices before establishing any connection – dot1x system-auth-control
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AMLS-L2-000160 – The Arista Multilayer Switch must authenticate 802.1X connected devices before establishing any connection – dot1x system-auth-control

Details

Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity.

For distributed architectures (e.g., service-oriented architectures), the decisions regarding the validation of authentication claims may be made by services separate from the services acting on those decisions. In such situations, it is necessary to provide authentication decisions (as opposed to the actual authenticators) to the services that need to act on those decisions.

This requirement applies to applications that connect either locally, remotely, or through a network to an endpoint device (including, but not limited to, workstations, printers, servers (outside a datacenter), VoIP Phones, and VTC CODECs). Gateways and SOA applications are examples of where this requirement would apply.

Device authentication is a solution enabling an organization to manage devices. It is an additional layer of authentication ensuring only specific pre-authorized devices can access the system.

Solution

Configure 802.1X on the switch, using the following mandatory parameters for all applicable interfaces. Replace the bracketed variable with the applicable value.

config
interface Ethernet[X]
switchport access vlan [Y]
dot1x pae authenticator
dot1x reauthentication
dot1x port-control auto
dot1x host-mode single-host
dot1x timeout quiet-period [value]
dot1x timeout reauth-period 3600
dot1x max-reauth-req [value]

For the global configuration, include the following command statements from the global configuration mode interface:

logging level DOT1X informational
aaa authentication dot1x default group radius
dot1x system-auth-control

Supportive Information

The following resource is also helpful.

This security hardening control applies to the following category of controls within NIST 800-53: Identification and Authentication.This control applies to the following type of system Arista.

References

Source

Updated on July 16, 2022
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