Check: JUNI-RT-000150
Juniper Router RTR STIG:
JUNI-RT-000150
(in versions v2 r4 through v1 r0.1)
Title
The Juniper router must be configured to have Gratuitous ARP disabled on all external interfaces. (Cat II impact)
Discussion
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.
Check Content
Review the configuration to determine if gratuitous ARP is disabled on all external interfaces. The following command should not be set to any interface: gratuitous-arp-reply If gratuitous ARP is enabled on any external interface, this is a finding.
Fix Text
Disable gratuitous ARP on all external interfaces using the following command. [edit interfaces ge-1/1/0 ] delete gratuitous-arp-reply
Additional Identifiers
Rule ID: SV-217021r604135_rule
Vulnerability ID: V-217021
Group Title: SRG-NET-000362-RTR-000111
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-002385 |
The information system protects against or limits the effects of organization-defined types of denial of service attacks by employing organization-defined security safeguards. |
Controls
| Number | Title |
|---|---|
| SC-5 |
Denial Of Service Protection |