The Photon operating system must not send IPv4 Internet Control Message Protocol (ICMP) redirects.
An XCCDF Rule
Description
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, possibly revealing portions of the network topology.
- ID
- SV-258890r933731_rule
- Version
- PHTN-40-000227
- Severity
- Medium
- References
- Updated
Remediation Templates
A Manual Procedure
Navigate to and open:
/etc/sysctl.d/zz-stig-hardening.conf
Add or update the following lines: