Arista MLS EOS 4.2x L2S Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Arista MLS switch must have STP Loop Guard enabled on all nondesignated STP switch ports.
<VulnDiscussion>The Spanning Tree Protocol (STP) loop guard feature provides additional protection against STP loops. An STP loop is created ...Rule Medium Severity -
SRG-NET-000362-L2S-000025
<GroupDescription></GroupDescription>Group -
The Arista MLS layer 2 switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.
<VulnDiscussion>In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, route...Rule Medium Severity -
SRG-NET-000362-L2S-000026
<GroupDescription></GroupDescription>Group -
The Arista MLS layer 2 switch must have IP Source Guard enabled on all user-facing or untrusted access switch ports.
<VulnDiscussion>IP Source Guard (IPSG) provides source IP address filtering on a layer 2 port to prevent a malicious host from impersonating ...Rule Medium Severity -
SRG-NET-000362-L2S-000027
<GroupDescription></GroupDescription>Group -
The Arista MLS layer 2 switch must have Dynamic Address Resolution Protocol (ARP) Inspection (DAI) enabled on all user VLANs.
<VulnDiscussion>DAI intercepts Address Resolution Protocol (ARP) requests and verifies that each of these packets has a valid IP-to-MAC addre...Rule Medium Severity -
The Arista MLS layer 2 Arista MLS switch must implement Rapid STP where VLANs span multiple switches with redundant links.
<VulnDiscussion>Spanning Tree Protocol (STP) is implemented on bridges and switches to prevent layer 2 loops when a broadcast domain spans mu...Rule Medium Severity -
SRG-NET-000512-L2S-000004
<GroupDescription></GroupDescription>Group -
The Arista MLS layer 2 switch must enable Unidirectional Link Detection (UDLD) to protect against one-way connections.
<VulnDiscussion>In topologies where fiber optic interconnections are used, physical misconnections can occur that allow a link to appear to b...Rule Medium Severity
Node 2
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