Detections
Analytics

1.10 CISC-RT-000190

Information

The Cisco router must be configured to have Internet Control Message Protocol (ICMP) redirect messages disabled on all external interfaces.

GROUP ID: V-216657
RULE ID: SV-216657r855818

The ICMP supports IP traffic by relaying information about paths, routes, and network conditions. Routers automatically send ICMP messages under a wide variety of conditions. Redirect ICMP messages are commonly used by attackers for network mapping and diagnosis.

NOTE: Nessus has provided the target output to assist in reviewing the benchmark to ensure target compliance.

Solution

Disable ICMP redirects on all external interfaces as shown in the example below:

R4(config)#int g0/1
R4(config-if)#no ip redirects

See Also

https://workbench.cisecurity.org/benchmarks/26261

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-5, CAT|II, CCI|CCI-002385, Rule-ID|SV-216657r855818_rule, STIG-ID|CISC-RT-000190, Vuln-ID|V-216657

Plugin: Cisco

Control ID: aab1b8f783ea74f978f8373d851ea3bee95a195fc80a5dbb245d52c506ba53b6