From HP FlexFabric Switch NDM Security Technical Implementation Guide
Part of SRG-APP-000038-NDM-000213
Associated with: CCI-001368
A mechanism to detect and prevent unauthorized communication flow must be configured or provided as part of the system design. If management information flow is not enforced based on approved authorizations, the HP FlexFabric Switch may become compromised. Information flow control regulates where management information is allowed to travel within a network device. The flow of all management information must be monitored and controlled so it does not introduce any unacceptable risk to the HP FlexFabric Switch or data.
Review the HP FlexFabric Switch configuration to determine if ACLs were configured for controlling the flow of management information within the HP FlexFabric Switch based on information flow control policies: [HP] display current-configuration acl number 3000 description ACL to block traffic with invalid address rule 0 permit icmp source 10.0.0.0 0.255.255.255 rule 1 deny ip source 172.16.0.0 0.15.255.255 rule 2 deny ip source 192.168.0.0 0.0.255.255 rule 3 deny ip source 169.254.0.0 0.0.255.255 rule 6 deny ip source 127.0.0.0 0.255.255.255 If ACLs are not configured for controlling the flow of management information within the HP FlexFabric Switch based on information flow control policies , this is a finding.
Configure the HP FlexFabric Switch for controlling the flow of management information within the HP FlexFabric Switch based on information flow control policies. Below is an example for an ACL configuration: [HP] acl number 3000 [HP-acl-adv-3000] description ACL to block traffic with invalid address [HP-acl-adv-3000] rule 0 permit icmp source 10.0.0.0 0.255.255.255 [HP-acl-adv-3000] rule 1 deny ip source 172.16.0.0 0.15.255.255 [HP-acl-adv-3000] rule 2 deny ip source 192.168.0.0 0.0.255.255 [HP-acl-adv-3000] rule 3 deny ip source 169.254.0.0 0.0.255.255 [HP-acl-adv-3000] rule 6 deny ip source 127.0.0.0 0.255.255.255 [HP] interface Vlan-interface 192 [HP-Vlan-interface192] packet-filter 3000 inbound
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