III - Administrative Public
Rules and Groups employed by this XCCDF Profile
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SRG-NET-000148-L2S-000015
Group -
The Juniper EX switch must be configured to uniquely identify all network-connected endpoint devices before establishing any connection.
Controlling LAN access via 802.1x authentication can assist in preventing a malicious user from connecting an unauthorized PC to an access interface to inject or receive data from the network witho...Rule High Severity -
SRG-NET-000168-L2S-000019
Group -
The Juniper layer 2 switch must be configured to disable all dynamic VLAN registration protocols.
Dynamic VLAN registration protocols provide centralized management of VLAN domains, which can reduce administration in a switched network. Interfaces are assigned to VLANs and the VLAN is dynamical...Rule Medium Severity -
SRG-NET-000193-L2S-000020
Group -
The Juniper EX switch must be configured to manage excess bandwidth to limit the effects of packet flooding types of denial-of-service (DoS) attacks.
DoS attacks can be mitigated by ensuring sufficient capacity is available for mission-critical traffic. Managing capacity may include, for example, establishing selected network usage priorities or...Rule Medium Severity -
SRG-NET-000331-L2S-000001
Group -
The Juniper EX switch must be configured to permit authorized users to select a user session to capture.
Without the capability to select a user session to capture/record or view/hear, investigations into suspicious or harmful events would be hampered by the volume of information captured. The volume ...Rule Medium Severity -
SRG-NET-000332-L2S-000002
Group -
The Juniper EX switch must be configured to permit authorized users to remotely view, in real time, all content related to an established user session from a component separate from the layer 2 switch.
Without the capability to remotely view/hear all content related to a user session, investigations into suspicious user activity would be hampered. Real-time monitoring allows authorized personnel ...Rule Medium Severity -
SRG-NET-000343-L2S-000016
Group -
The Juniper EX switch must be configured to authenticate all network-connected endpoint devices before establishing any connection.
Without authenticating devices, unidentified or unknown devices may be introduced, thereby facilitating malicious activity. Device authentication is a solution enabling an organization to manage d...Rule Medium Severity -
SRG-NET-000362-L2S-000021
Group -
The Juniper EX switch must be configured to enable Root Protection on STP switch ports connecting to access layer switches.
Spanning Tree Protocol (STP) does not provide any means for the network administrator to securely enforce the topology of the switched network. Any switch can be the root bridge in a network. Howev...Rule Low Severity -
SRG-NET-000362-L2S-000022
Group -
The Juniper EX switch must be configured to enable BPDU Protection on all user-facing or untrusted access switch ports.
If a rogue switch is introduced into the topology and transmits a Bridge Protocol Data Unit (BPDU) with a lower bridge priority than the existing root bridge, it will become the new root bridge and...Rule Medium Severity -
SRG-NET-000362-L2S-000023
Group -
The Juniper EX switch must be configured to enable STP Loop Protection on all non-designated STP switch ports.
The Spanning Tree Protocol (STP) Loop Protection feature provides additional protection against STP loops. An STP loop is created when an STP blocking port in a redundant topology erroneously trans...Rule Medium Severity -
SRG-NET-000362-L2S-000024
Group -
The Juniper EX switch must be configured not to forward unknown unicast traffic to access interfaces.
Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific interfaces based on the VLAN number and the destination MAC address of the frame. When a router ha...Rule Medium Severity
Node 2
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