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The Arista MLS layer 2 switch must be configured for Storm Control to limit the effects of packet flooding types of denial-of-service (DoS) attacks.

An XCCDF Rule

Description

<VulnDiscussion>Denial of service is a condition when a resource is not available for legitimate users. Packet flooding distributed DOS (DDoS) attacks are referred to as volumetric attacks and have the objective of overloading a network or circuit to deny or seriously degrade performance, which denies access to the services that normally traverse the network or circuit. Volumetric attacks have become relatively easy to launch by using readily available tools such as Low Orbit Ion Cannon or by using botnets. Measures to mitigate the effects of a successful volumetric attack must be taken to ensure that sufficient capacity is available for mission-critical traffic. Managing capacity may include, for example, establishing selected network usage priorities or quotas and enforcing them using rate limiting, Quality of Service (QoS), or other resource reservation control methods. These measures may also mitigate the effects of sudden decreases in network capacity that are the result of accidental or intentional physical damage to telecommunications facilities (such as cable cuts or weather-related outages). Satisfies: SRG-NET-000193-L2S-000020, SRG-NET-000362-L2S-000024, SRG-NET-000512-L2S-000001</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>

ID
SV-255969r882249_rule
Severity
Medium
References
Updated



Remediation - Manual Procedure

The Arista MLS switch must be configured to implement a storm-control policy for traffic prioritization and bandwidth reservation.

Storm-control on switch Ethernet interfaces can be configured to limit the packets based on broadcast, multicast, and unknown-unicast traffic:

switch#configure
switch(config)#internet et[X]