Juniper EX Series Switches Layer 2 Switch Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-NET-000512-L2S-000002
<GroupDescription></GroupDescription>Group -
The Juniper EX switch must be configured to enable IGMP or MLD Snooping on all VLANs.
<VulnDiscussion>IGMP and MLD snooping provides a way to constrain multicast traffic at layer 2. By monitoring the IGMP or MLD membership repo...Rule Low Severity -
SRG-NET-000512-L2S-000003
<GroupDescription></GroupDescription>Group -
If STP is used, the Juniper EX switch must be configured to implement Rapid STP, or Multiple 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 Juniper EX switch must be configured to verify two-way connectivity on all interswitch trunked interfaces.
<VulnDiscussion>In topologies where fiber optic interconnections are used, physical misconnections can occur that allow a link to appear to b...Rule Medium Severity -
SRG-NET-000512-L2S-000007
<GroupDescription></GroupDescription>Group -
The Juniper EX switch must be configured to assign all disabled access interfaces to an unused VLAN.
<VulnDiscussion>It is possible that a disabled access interface that is assigned to a user or management VLAN becomes enabled by accident or ...Rule Medium Severity -
SRG-NET-000512-L2S-000008
<GroupDescription></GroupDescription>Group -
The Juniper EX switch must not be configured with VLANs used for L2 control traffic assigned to any host-facing access interface.
<VulnDiscussion>In a switched Ethernet network, some protocols use L2 Protocol Data Units (PDU) to communicate in-band management or other co...Rule Medium Severity
Node 2
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