JUNI-RT-000150 - The Juniper router must be configured to have Gratuitous ARP disabled on all external interfaces.

Information

A gratuitous ARP is an ARP broadcast in which the source and destination MAC addresses are the same. It is used to inform the network about a host IP address. A spoofed gratuitous ARP message can cause network mapping information to be stored incorrectly, causing network malfunction.

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

Solution

Disable gratuitous ARP on all external interfaces using the following command.

[edit interfaces ge-1/1/0 ]
delete gratuitous-arp-reply

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_Juniper_Router_Y24M07_STIG.zip

Item Details

Category: SYSTEM AND COMMUNICATIONS PROTECTION

References: 800-53|SC-5, CAT|II, CCI|CCI-002385, Rule-ID|SV-217021r855889_rule, STIG-ID|JUNI-RT-000150, STIG-Legacy|SV-101037, STIG-Legacy|V-90827, Vuln-ID|V-217021

Plugin: Juniper

Control ID: 0f8ac2d62109db94ce006030155ca0621c39edd86e964ed5ecfbb9436dc5da24