From HP FlexFabric Switch RTR Security Technical Implementation Guide
Part of SRG-NET-000019-RTR-000002
Associated with: CCI-001414
Information flow control regulates authorized information to travel within a network and between interconnected networks. Controlling the flow of network traffic is critical so it does not introduce any unacceptable risk to the network infrastructure or data. An example of a flow control restriction is blocking outside traffic claiming to be from within the organization. For most routers, internal information flow control is a product of system design.
Review the HP FlexFabric Switch configuration to determine if the switch enforces approved authorizations for controlling the flow of information between interconnected networks or VLANs in accordance with applicable policy. This requirement can be met through the use of IP access control lists which are applied to specific interfaces inbound or outbound as show in the following example: acl number 3001 rule 1 deny ip source 192.168.3.121 0 rule 2 permit ip source 192.100.1.0 0.0.0.255 destination 192.200.2.0 0.0.0.255 interface Ten-GigabitEthernet1/0/21 ip address 102.17.17.2 255.255.255.252 packet-filter 3001 inbound If the switch does not enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy, this is a finding.
Configure the switch to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy using ACLs that are applied to the appropriate interfaces.
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