The system must not use UDP for NIS/NIS+.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001436

SV-4399r2_rule The system must not use UDP for NIS/NIS+.

Vulnerability discussion

Implementing NIS or NIS+ under UDP may make the system more susceptible to a Denial of Service attack and does not provide the same quality of service as TCP.

Check content

If the system does not use NIS or NIS+, this is not applicable. Check if NIS or NIS+ is implemented using UDP. Procedure: # rpcinfo -p | grep yp | grep udp If NIS or NIS+ is implemented using UDP, this is a finding.

Fix text

Configure the system to not use UDP for NIS and NIS+. Consult vendor documentation for the required procedure.

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