The Arista Multilayer Switch must enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.

From Arista MLS DCS-7000 Series RTR Security Technical Implementation Guide

Part of SRG-NET-000019-RTR-000002

Associated with: CCI-001414

SV-75273r1_rule The Arista Multilayer Switch must enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.

Vulnerability discussion

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.

Check content

Verify each router enforces approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy. This requirement may be met through the use of IP access control lists. To verify IP access lists are configured, execute the "show ip access-lists summary" command, and check that the list is configured and is active on applicable interfaces. To verify the lists control the flow of information in accordance with organizational policy, enter the "show ip access-list [name]" command, and review the associated permit and deny statements. If the router does not enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy, this is a finding.

Fix text

Configure the router to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy. To use an IP access list to fulfill this function, enter the following commands, substituting organizational values for the bracketed variables. ip access-list [name] [permit/deny] [protocol] [source address] [source port] [destination address] [destination port] exit interface [type] [number] ip access-group [name] [direction]

Pro Tips

Lavender hyperlinks in small type off to the right (of CSS class id, if you view the page source) point to globally unique URIs for each document and item. Copy the link location and paste anywhere you need to talk unambiguously about these things.

You can obtain data about documents and items in other formats. Simply provide an HTTP header Accept: text/turtle or Accept: application/rdf+xml.

Powered by sagemincer