The Cisco switch must be configured to support organizational requirements to conduct backups of the configuration when changes occur.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-220618	CISC-ND-001410	SV-220618r521267_rule		Medium

Description
System-level information includes default and customized settings and security attributes, including access control lists (ACLs) that relate to the network device configuration, as well as software required for the execution and operation of the device. Information system backup is a critical step in ensuring system integrity and availability. If the system fails and there is no backup of the system-level information, a denial-of-service condition is possible for all who use this critical network component. The network device must support the organizational central backup process for system-level information associated with the network device. This function may be provided by the network device itself; however, the preferred best practice is a centralized backup rather than each network device performing discrete backups.

Description

System-level information includes default and customized settings and security attributes, including access control lists (ACLs) that relate to the network device configuration, as well as software required for the execution and operation of the device. Information system backup is a critical step in ensuring system integrity and availability. If the system fails and there is no backup of the system-level information, a denial-of-service condition is possible for all who use this critical network component. The network device must support the organizational central backup process for system-level information associated with the network device. This function may be provided by the network device itself; however, the preferred best practice is a centralized backup rather than each network device performing discrete backups.

STIG	Date
Cisco IOS Switch NDM Security Technical Implementation Guide	2020-09-23

Details

Check Text ( C-22333r507900_chk )
Review the Cisco switch configuration to verify that it backs up the configuration when changes occur. The example configuration below will send the configuration to a TFTP server when a configuration change occurs: event manager applet BACKUP_CONFIG event syslog pattern "%SYS-5-CONFIG_I" action 1 info type switchname action 2 cli command "enable" action 3 cli command "copy run tftp" pattern "remote host" action 4 cli command "x.x.x.x" pattern "filename" action 5 cli command "$_info_switchname-config" action 6 syslog priority informational msg "Configuration backup was executed" If the Cisco switch is not configured to conduct backups of the configuration when changes occur, this is a finding.

Check Text ( C-22333r507900_chk )

Review the Cisco switch configuration to verify that it backs up the configuration when changes occur. The example configuration below will send the configuration to a TFTP server when a configuration change occurs:

event manager applet BACKUP_CONFIG
event syslog pattern "%SYS-5-CONFIG_I"
action 1 info type switchname
action 2 cli command "enable"
action 3 cli command "copy run tftp" pattern "remote host"
action 4 cli command "x.x.x.x" pattern "filename"
action 5 cli command "$_info_switchname-config"
action 6 syslog priority informational msg "Configuration backup was executed"

If the Cisco switch is not configured to conduct backups of the configuration when changes occur, this is a finding.

Fix Text (F-22322r507901_fix)
Configure the Cisco switch to send the configuration to a TFTP or an FTP server when a configuration change occurs as shown in the example below: SW4(config)#event manager applet BACKUP_CONFIG SW4(config-applet)#event syslog pattern "%SYS-5-CONFIG_I" SW4(config-applet)#action 1 cli command "enable" SW4(config-applet)#action 2 info type switchname SW4(config-applet)#action 3 cli command "copy run tftp" pattern "remote host" SW4(config-applet)#action 4 cli command "x.x.x.x" pattern "filename" SW4(config-applet)#action 5 cli command "$_info_switchname-config" SW4(config-applet)#action 6 syslog priority informational msg "Configuration backup was executed" SW4(config-applet)#end

Fix Text (F-22322r507901_fix)

Configure the Cisco switch to send the configuration to a TFTP or an FTP server when a configuration change occurs as shown in the example below:

SW4(config)#event manager applet BACKUP_CONFIG
SW4(config-applet)#event syslog pattern "%SYS-5-CONFIG_I"
SW4(config-applet)#action 1 cli command "enable"
SW4(config-applet)#action 2 info type switchname
SW4(config-applet)#action 3 cli command "copy run tftp" pattern "remote host"
SW4(config-applet)#action 4 cli command "x.x.x.x" pattern "filename"
SW4(config-applet)#action 5 cli command "$_info_switchname-config"
SW4(config-applet)#action 6 syslog priority informational msg "Configuration backup was executed"
SW4(config-applet)#end