The Cisco router must employ automated mechanisms to centrally verify authentication settings.
The use of authentication servers or other centralized management servers for providing centralized authentication services is required for network device management. Maintaining local administrator accounts for daily usage on each network device without centralized management is not scalable or feasible. Without centralized management, it is likely that credentials for some network devices will be forgotten, leading to delays in administration, which itself leads to delays in remediating production problems and in addressing compromises in a timely fashion.
The Cisco router is not compliant with this requirement. However, the risk associated with this requirement can be fully mitigated if the router is configured to utilize an authentication server to authenticate and authorize users for administrative access.
Review the router configuration to verify that the device is configured to use an authentication server as primary source for authentication as shown in the following example:
aaa new-model ! aaa authentication login LOGIN_AUTHENTICATION group radius local … … … ip http authentication aaa login-authentication LOGIN_AUTHENTICATION ip http secure-server … … … radius-server host x.x.x.x auth-port 1645 acct-port 1646 key xxxxxxx … … … line con 0 exec-timeout 10 0 login authentication LOGIN_AUTHENTICATION line vty 0 4 exec-timeout 10 0 login authentication LOGIN_AUTHENTICATION
If the router is not configured to use an authentication server to authenticate and authorize users for administrative access, this is a finding.
Fix Text (F-102031r1_fix)
Step 1: Configure the Cisco router to use an authentication server as shown in the following example:
R4(config)#radius host 10.1.48.2 key xxxxxx
Step 2: Configure the authentication order to use the authentication server as primary source for authentication as shown in the following example:
R4(config)#aaa authentication login LOGIN_AUTHENTICATION group radius local
Step 3: Configure all network connections associated with a device management to use an authentication server for the purpose of login authentication.