The system must not have Teredo enabled.

From Red Hat Enterprise Linux 5 Security Technical Implementation Guide

Associated with IA controls: ECSC-1

Associated with: CCI-001551

SV-37611r1_rule The system must not have Teredo enabled.

Vulnerability discussion

Teredo is an IPv6 transition mechanism involving tunneling IPv6 packets encapsulated in IPv4 packets. Unauthorized tunneling may circumvent network security.

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Edit startup scripts to prevent the service from running on startup.

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