HP FlexFabric Switch L2S Security Technical Implementation Guide

Overview

Version	Date	Finding Count (22)			Downloads
1	2020-06-03 2018-12-21 2018-12-21 2018-12-21 2018-12-21	CAT I (High): 1	CAT II (Med): 21	CAT III (Low): 0	Excel	JSON	XML

STIG Description
This Security Technical Implementation Guide is published as a tool to improve the security of Department of Defense (DoD) information systems. The requirements are derived from the National Institute of Standards and Technology (NIST) 800-53 and related documents. Comments or proposed revisions to this document should be sent via e-mail to the following address: disa.stig_spt@mail.mil.

Available Profiles

Classified	Public	Sensitive
I - Mission Critical Classified	I - Mission Critical Public	I - Mission Critical Sensitive	II - Mission Support Classified	II - Mission Support Public	II - Mission Support Sensitive	III - Administrative Classified	III - Administrative Public	III - Administrative Sensitive

Findings (MAC III - Administrative Sensitive)

Finding ID	Severity	Title	Description
V-66051	High	HP FlexFabric Switch must authenticate all network-connected endpoint devices before establishing any connection.	Controlling LAN access via 802.1x authentication or MAC authentication can assist in preventing a malicious user from connecting an unauthorized PC to a switch port to inject or receive data from...
V-66057	Medium	The HP FlexFabric Switch must manage excess bandwidth to limit the effects of packet flooding types of denial of service (DoS) attacks.	Denial of service is a condition when a resource is not available for legitimate users. Packet flooding DDoS attacks are referred to as volumetric attacks and have the objective of overloading a...
V-66059	Medium	The HP FlexFabric Switch must provide the capability for 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...
V-66095	Medium	The HP FlexFabric Switch must have the native VLAN assigned to a VLAN ID other than the default VLAN ID for all 802.1q trunk links.	VLAN hopping can be initiated by an attacker who has access to a switch port belonging to the same VLAN as the native VLAN of the trunk link connecting to another switch that the victim is...
V-66097	Medium	The HP FlexFabric Switch must not have any access switch ports assigned to the native VLAN.	Double encapsulation can be initiated by an attacker who has access to a switch port belonging to the native VLAN of the trunk port. Knowing the victim’s MAC address and with the victim attached...
V-66091	Medium	The HP FlexFabric Switch must not use the default VLAN for management traffic.	Switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with directly connected switches using Spanning-Tree Protocol (STP), Dynamic Trunking Protocol (DTP), VLAN...
V-66079	Medium	The HP FlexFabric Switch must enable Device Link Detection Protocol (DLDP) 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...
V-66075	Medium	The HP FlexFabric Switch must have Dynamic ARP Inspection (DAI) enabled on all user VLANs.	DAI intercepts Address Resolution Protocol (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...
V-66073	Medium	The HP FlexFabric Switch must have IP Source Guard 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...
V-66071	Medium	The HP FlexFabric Switch must have DHCP snooping for all user VLANs to validate DHCP messages from untrusted sources as well as rate-limit DHCP traffic.	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 Dynamic Host...
V-66069	Medium	The HP FlexFabric Switch must have unknown storm-constrain enabled.	Access layer switches use the Content Addressable Memory (CAM) table to direct traffic to specific ports based on the VLAN number and the destination MAC address of the frame. When a router has an...
V-66093	Medium	The HP FlexFabric Switch must have all user-facing or untrusted ports configured as access switch ports.	Double encapsulation can be initiated by an attacker who has access to a switch port belonging to the native VLAN of the trunk port. Knowing the victim's MAC address and with the victim attached...
V-65961	Medium	The HP FlexFabric Switch must be configured to disable non-essential capabilities.	A compromised switch introduces risk to the entire network infrastructure as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of...
V-66077	Medium	The HP FlexFabric Switch must implement Rapid STP where VLANs span multiple switches with redundant links.	Spanning Tree Protocol (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...
V-66067	Medium	The HP FlexFabric Switch must have STP Loop Protection enabled 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...
V-66081	Medium	The HP FlexFabric Switch must have all trunk links enabled statically.	When trunk negotiation is enabled via Dynamic Trunk Protocol (DTP), considerable time can be spent negotiating trunk settings (802.1q or ISL) when a node or interface is restored. While this...
V-66087	Medium	The HP FlexFabric Switch must not have the default VLAN assigned to any host-facing switch ports.	In a VLAN-based network, switches use the default VLAN (i.e., VLAN 1) for in-band management and to communicate with other networking devices using Spanning-Tree Protocol (STP), Dynamic Trunking...
V-66085	Medium	The HP FlexFabric Switch must have all disabled switch ports assigned an unused VLAN.	It is possible that a disabled port that is assigned to a user or management VLAN becomes enabled by accident or by an attacker and as a result gains access to that VLAN as a member.
V-66065	Medium	The HP FlexFabric Switch must have BPDU Guard enabled on all user-facing access 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...
V-66089	Medium	The HP FlexFabric 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...
V-66061	Medium	The HP FlexFabric Switch must provide the capability for authorized users to remotely view, in real time, all content related to an established user session from a component separate from the HP FlexFabric 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...
V-66063	Medium	The HP FlexFabric Switch must have Root Guard enabled on all ports where the root bridge should not appear.	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....