NET0898 - Syslog traffic is not using loopback address - 'logging source-interface Loopback0'

Information

The router must use its loopback or OOB management interface address as the source address when originating syslog traffic.

Using a loopback address as the source address offers a multitude of uses for security, access, management, and scalability of routers. It is easier to construct appropriate ingress filters for router management plane traffic destined to the network management subnet since the source addresses will be from the range used for loopback interfaces instead of a larger range of addresses used for physical interfaces. Log information recorded by authentication and syslog servers will record the router's loopback address instead of the numerous physical interface addresses. Syslog messages sent to management servers should use the loopback address as the source address.

NOTE: If the device is managed from an OOB management network, the OOB interface must be used instead.

Solution

Configure the router to use its loopback or OOB management interface address as the source address when originating syslog traffic.

See Also

https://iasecontent.disa.mil/stigs/zip/U_Network_Perimeter_Router_L3_Switch_V8R32_STIG.zip

Item Details

Category: AUDIT AND ACCOUNTABILITY

References: 800-53|AU-12, CAT|III, Rule-ID|SV-15339r3_rule, STIG-ID|NET0898, Vuln-ID|V-14673

Plugin: Cisco

Control ID: de81d620fef20ec5d348434a39dd67db5b932d13febfdc7a8951140ceaa1ef6b