Dell OS10 Switch Layer 2 Switch Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Dell OS10 Switch must manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.
DoS is a condition when a resource is not available for legitimate users. Packet flooding distributed denial-of-service (DDoS) attacks are referred to as volumetric attacks and have the objective o...Rule Medium Severity -
The Dell OS10 Switch must have STP Loop Guard enabled on all nondesignated STP switch ports.
The Spanning Tree Protocol (STP) loop guard feature provides additional protection against STP loops. An STP loop is created when an STP blocking port in a redundant topology erroneously transition...Rule Medium Severity -
The Dell OS10 Switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources.
In an enterprise network, devices under administrative control are trusted sources. These devices include the switches, routers, and servers in the network. Host ports and unknown DHCP servers are ...Rule Medium Severity -
The Dell OS10 Switch must have Source Address Validation (SAV) enabled on all user-facing or untrusted access switch ports.
IP Source Guard provides source IP address filtering on a Layer 2 port to prevent a malicious host from impersonating a legitimate host by assuming the legitimate host's IP address. The feature use...Rule Medium Severity -
The Dell OS10 Switch must have Dynamic Address Resolution Protocol (ARP) Inspection (DAI) enabled on all user VLANs.
DAI intercepts ARP requests and verifies that each of these packets has a valid IP-to-MAC address binding before updating the local ARP cache and before forwarding the packet to the appropriate des...Rule Medium Severity -
The Dell OS10 Switch must have Storm Control configured on all host-facing switch ports.
A traffic storm occurs when packets flood a LAN, creating excessive traffic and degrading network performance. Traffic storm control prevents network disruption by suppressing ingress traffic when ...Rule Low Severity -
The Dell OS10 Switch must have IGMP or MLD Snooping configured on all VLANs
IGMP and MLD snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP or MLD membership reports sent by hosts within a VLAN, the snooping application can set up Lay...Rule Low Severity -
The Dell OS10 Switch must implement Rapid Spanning Tree Protocol (STP) where VLANs span multiple switches with redundant links.
STP is implemented on bridges and switches to prevent Layer 2 loops when a broadcast domain spans multiple bridges and switches and when redundant links are provisioned to provide high availability...Rule Medium Severity -
The Dell OS10 Switch must enable Far-End Failure Detection (FEFD) to protect against one-way connections.
In topologies where fiber-optic interconnections are used, physical misconnections can occur that allow a link to appear to be up when there is a mismatched set of transmit/receive pairs. When such...Rule Medium Severity -
The Dell OS10 Switch must have the default VLAN pruned from all trunk ports that do not require it.
The default VLAN (i.e., VLAN 1) is a special VLAN used for control plane traffic such as Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP), VLAN Trunking Protocol (VTP), and Port Aggreg...Rule Medium Severity
Node 2
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