Cisco NX OS Switch RTR Security Technical Implementation Guide
Rules, Groups, and Values defined within the XCCDF Benchmark
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SRG-NET-000078-RTR-000001
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The Cisco switch must be configured to log all packets that have been dropped at interfaces via an ACL.
Auditing and logging are key components of any security architecture. It is essential for security personnel to know what is being done or attempted to be done, and by whom, to compile an accurate ...Rule Low Severity -
SRG-NET-000202-RTR-000001
Group -
SRG-NET-000019-RTR-000002
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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.
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 introduc...Rule Medium Severity -
SRG-NET-000364-RTR-000109
Group -
The Cisco perimeter switch must be configured to only allow incoming communications from authorized sources to be routed to authorized destinations.
Unrestricted traffic may contain malicious traffic that poses a threat to an enclave or to other connected networks. Additionally, unrestricted traffic may transit a network, which uses bandwidth a...Rule Medium Severity -
SRG-NET-000364-RTR-000110
Group -
The Cisco perimeter switch must be configured to block inbound packets with source Bogon IP address prefixes.
Packets with Bogon IP source addresses should never be allowed to traverse the IP core. Bogon IP networks are RFC1918 addresses or address blocks that have never been assigned by the IANA or have b...Rule Medium Severity -
SRG-NET-000205-RTR-000014
Group -
SRG-NET-000205-RTR-000003
Group -
SRG-NET-000205-RTR-000004
Group -
The Cisco perimeter switch must be configured to filter ingress traffic at the external interface on an inbound direction.
Access lists are used to separate data traffic into that which it will route (permitted packets) and that which it will not route (denied packets). Secure configuration of switches makes use of acc...Rule Medium Severity -
SRG-NET-000205-RTR-000005
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SRG-NET-000205-RTR-000015
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SRG-NET-000364-RTR-000111
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The Cisco perimeter switch must be configured to have Link Layer Discovery Protocol (LLDP) disabled on all external interfaces.
LLDP is a neighbor discovery protocol used to advertise device capabilities, configuration information, and device identity. LLDP is media-and-protocol-independent as it runs over layer 2; therefor...Rule Low Severity -
SRG-NET-000364-RTR-000111
Group -
SRG-NET-000364-RTR-000112
Group -
SRG-NET-000364-RTR-000113
Group
Node 2
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