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The Cisco switch must be configured to disable non-essential capabilities.


Overview

Finding ID Version Rule ID IA Controls Severity
V-101219 CISC-L2-000010 SV-110323r1_rule Medium
Description
A compromised switch introduces risk to the entire network infrastructure as well as data resources that are accessible via the network. The perimeter defense has no oversight or control of attacks by malicious users within the network. Preventing network breaches from within is dependent on implementing a comprehensive defense-in-depth strategy, including securing each device connected to the network. This is accomplished by following and implementing all security guidance applicable for each node type. A fundamental step in securing each switch is to enable only the capabilities required for operation.
STIG Date
Cisco NX-OS Switch L2S Security Technical Implementation Guide 2020-05-07

Details

Check Text ( C-100099r1_chk )
Verify that the switch does not have any unnecessary or non-secure ports, protocols, and services enabled. For example, the following features such as telnet should never be enabled, while other features should only be enabled if required for operations.

feature telnet
feature wccp
feature nxapi
feature imp

If any unnecessary or non-secure ports, protocols, or services are enabled, this is a finding.
Fix Text (F-106923r1_fix)
Disable features that should not be enabled unless required for operations.

SW2(config)# no feature telnet
SW2(config)# no feature wccp
SW2(config)# no feature nxapi
SW2(config)# no feature imp

Note: Telnet must always be disabled.