Proxy Neighbor Discovery Protocol (NDP) must not be enabled on the system.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-38925r1_rule Proxy Neighbor Discovery Protocol (NDP) must not be enabled on the system.

Vulnerability discussion

Proxy Neighbor Discovery Protocol (NDP) allows a system to respond to NDP 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.

Check content

If the system does not support proxy NDP, this is not applicable. Determine if the system has proxy NDP enabled. If IPv6 is enabled, determine if any non-local published NDP entries exist on the system. # ndp -a If any NDP entries contain non-local published entries, this is a finding.

Fix text

Remove non-local published NDP entries from the system. # ndp -d Check system startup scripts for commands publishing NDP entries (such as "ndp -s pub") and remove them.

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