Cisco NX OS Switch RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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The Cisco switch must be configured to drop all fragmented Internet Control Message Protocol (ICMP) packets destined to itself.
<VulnDiscussion>Fragmented ICMP packets can be generated by hackers for DoS attacks such as Ping O' Death and Teardrop. It is imperative that...Rule Medium Severity -
SRG-NET-000362-RTR-000111
<GroupDescription></GroupDescription>Group -
The Cisco switch must be configured to have Gratuitous ARP disabled on all external interfaces.
<VulnDiscussion>A gratuitous ARP is an ARP broadcast in which the source and destination MAC addresses are the same. It is used to inform the...Rule Medium Severity -
SRG-NET-000362-RTR-000112
<GroupDescription></GroupDescription>Group -
The Cisco perimeter switch must be configured to enforce approved authorizations for controlling the flow of information between interconnected networks in accordance with applicable policy.
<VulnDiscussion>Information flow control regulates authorized information to travel within a network and between interconnected networks. Con...Rule Medium Severity -
SRG-NET-000364-RTR-000109
<GroupDescription></GroupDescription>Group -
The Cisco BGP switch must be configured to reject inbound route advertisements from a customer edge (CE) switch for prefixes that are not allocated to that customer.
<VulnDiscussion>As a best practice, a service provider should only accept customer prefixes that have been assigned to that customer and any ...Rule Medium Severity -
SRG-NET-000018-RTR-000005
<GroupDescription></GroupDescription>Group -
The Cisco PE switch must be configured to implement Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) snooping for each Virtual Private LAN Services (VPLS) bridge domain.
<VulnDiscussion>IGMP snooping provides a way to constrain multicast traffic at Layer 2. By monitoring the IGMP membership reports sent by hos...Rule Low Severity -
SRG-NET-000192-RTR-000002
<GroupDescription></GroupDescription>Group
Node 2
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