The RUCKUS ICX router must be configured to have Gratuitous Address Resolution Protocol (ARP) disabled on all external interfaces.
Severity | Group ID | Group Title | Version | Rule ID | Date | STIG Version |
|---|---|---|---|---|---|---|
| medium | V-273629 | SRG-NET-000362-RTR-000111 | RCKS-RTR-000620 | SV-273629r1111036_rule | 2025-06-03 | 1 |
| Description |
|---|
| 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. |
| ℹ️ Check |
|---|
| The RUCKUS ICX disables gratuitous ARP by default. Review the configuration to verify the command below does not appear. ip arp learn-gratuitous-arp If the above command is present in the configuration, this is a finding. |
| ✔️ Fix |
|---|
| Disable learning of gratuitous ARPs: ICX(config)#no ip arp learn-gratuitous-arp |