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XCCDF
Guide to the Secure Configuration of Fedora
System Settings
Network Configuration and Firewalls
IPv6
Configure IPv6 Settings if Necessary
Use Privacy Extensions for Address
Use Privacy Extensions for Address
An XCCDF Rule
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Use Privacy Extensions for Address
Unknown Severity
To introduce randomness into the automatic generation of IPv6 addresses, add or correct the following line in
/etc/sysconfig/network-scripts/ifcfg-
interface
:
IPV6_PRIVACY=rfc3041
Automatically-generated IPv6 addresses are based on the underlying hardware (e.g. Ethernet) address, and so it becomes possible to track a piece of hardware over its lifetime using its traffic. If it is important for a system's IP address to not trivially reveal its hardware address, this setting should be applied.