The system must not send IPv6 ICMP redirects.

From AIX 6.1 SECURITY TECHNICAL IMPLEMENTATION GUIDE

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-38826r1_rule The system must not send IPv6 ICMP redirects.

Vulnerability discussion

ICMP redirect messages are used by routers to inform hosts that a more direct route exists for a particular destination. These messages contain information from the system's route table that could reveal portions of the network topology.

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Fix text

Configure the system to not send IPv6 ICMP redirects. # /usr/sbin/no -p -o ipsendredirects=0

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