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Gratuitous ARP must be disabled.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-5618 | NET0781 | SV-5618r3_rule | Medium |
| 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. |
| STIG | Date |
|---|---|
| Perimeter L3 Switch Security Technical Implementation Guide - Cisco | 2018-08-22 |
Details
| Check Text ( C-3577r7_chk ) |
|---|
| Review the configuration to determine if gratuitous ARP is disabled. If gratuitous ARP is enabled, this is a finding. |
| Fix Text (F-5529r5_fix) |
|---|
| Disable gratuitous ARP on the device. |