Vulnerability V-215812

Review the Cisco router configuration to verify that it is compliant with this requirement. Step 1: Verify that the line vty has an ACL inbound applied as shown in the example below. line vty 0 1 access-class MANAGEMENT_NET in transport input ssh Step 2: Verify that the ACL permits only hosts from the management network to access the router. ip access-list extended MANAGEMENT_NET permit ip x.x.x.0 0.0.0.255 any deny ip any any log-input If the Cisco router is not configured to enforce approved authorizations for controlling the flow of management information within the device based on control policies, this is a finding.

Configure the Cisco router to restrict management access to specific IP addresses via SSH as shown in the example below. SW2(config)#ip access-list standard MANAGEMENT_NET SW2(config-std-nacl)#permit x.x.x.0 0.0.0.255 SW2(config-std-nacl)#exit SW2(config)#line vty 0 1 SW2(config-line)#transport input ssh SW2(config-line)#access-class MANAGEMENT_NET in SW2(config-line)#end