Proxy Address Resolution Protocol (ARP) must not be enabled on the system.

From HP-UX 11.31 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-29602r1_rule Proxy Address Resolution Protocol (ARP) must not be enabled on the system.

Vulnerability discussion

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.

Check content

Check the system for non-local published ARP entries. # arp -a[n] If any entries are listed as published, this is a finding.

Fix text

Remove any non-local published ARP entries. # arp -d Check system initialization scripts for any commands configuring published ARP entries (such as "arp -s pub") and remove them. # grep -n "arp \-s" /sbin/init.d/*

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