Detections
Analytics

GEN003608 - Proxy ARP must not be enabled on the system.

Information

Proxy ARP allows a system to respond to ARP requests on one interface on behalf of hosts connected to another interface. If this function is enabled when not required, addressing information may be leaked between the attached network segments.

Solution

Remove non-local published ARP entries from the system.

Procedure:
# arp -d <host>

Check system initialization files for any commands creating published ARP entries (such as 'arp -s <host> <ether> pub' or 'arp -f') and removing them.

See Also

https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_SOL_10_x86_V2R4_STIG.zip

Item Details

Category: CONFIGURATION MANAGEMENT

References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-227801r603266_rule, STIG-ID|GEN003608, STIG-Legacy|SV-29603, STIG-Legacy|V-22415, Vuln-ID|V-227801

Plugin: Unix

Control ID: b239c57421ddeccd3cb131f57f4d9d1cf41087f6de5c0c2e0332262de92f8d9b