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Check: GEN007880

Solaris 9 X86 STIG: GEN007880 (in version v1 r9)

Title

The system must not send IPv6 ICMP redirects. (Cat II impact)

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 revealing portions of the network topology.

Check Content

Verify the system is configured to not send IPv6 ICMP redirect messages. # ndd /dev/ip6 ip6_send_redirects If the returned value is not 0, this is a finding.

Fix Text

Configure the system to not send IPv6 ICMP redirect messages. # ndd -set /dev/ip6 ip6_send_redirects 0 Also, add this command to a system startup script.

Additional Identifiers

Rule ID: SV-26938r1_rule

Vulnerability ID: V-22551

Group Title:

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CCIs

CCIs tied to check.

Number	Definition
CCI-001551	The organization defines approved authorizations for controlling the flow of information between interconnected systems.

Controls

Controls tied to check. These are derived from the CCIs shown above.

Number	Title
AC-4	Information Flow Enforcement