The system must ignore ICMP redirect messages.
An XCCDF Rule
Description
<VulnDiscussion>Ignoring ICMP redirect messages reduces the likelihood of denial of service attacks.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
- ID
- SV-216137r959010_rule
- Severity
- Low
- References
- Updated
Remediation - Manual Procedure
The Network Management profile is required.
Disable ignore redirects for IPv4 and IPv6.
# pfexec ipadm set-prop -p _ignore_redirect=1 ipv4
# pfexec ipadm set-prop -p _ignore_redirect=1 ipv6