The system must not have IP forwarding for IPv6 enabled, unless the system is an IPv6 router.

From HP-UX 11.31 Security Technical Implementation Guide

Part of GEN005610

Associated with IA controls: ECSC-1

Associated with: CCI-000366

SV-26811r1_rule The system must not have IP forwarding for IPv6 enabled, unless the system is an IPv6 router.

Vulnerability discussion

If the system is configured for IP forwarding and is not a designated router, it could be used to bypass network security by providing a path for communication not filtered by network devices.

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Fix text

Disable IPv6 forwarding: # ndd -set /dev/ip6 ip6_forwarding 0 Edit /etc/rc.config.d/nddconf: TRANSPORT_NAME[index]=ip6 NDD_NAME[index]=ip6_forwarding NDD_VALUE[index]=0 Where: index is the next available integer value of the nddconf file. n is a number: either 1 to turn the feature ON or 0 to turn it OFF.

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