Detections
Analytics
PHTN-40-000227 - The Photon operating system must not send IPv4 Internet Control Message Protocol (ICMP) redirects.
Information
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.Solution
Navigate to and open:/etc/sysctl.d/zz-stig-hardening.conf
Add or update the following lines:
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
At the command line, run the following command to load the new configuration:
# /sbin/sysctl --load /etc/sysctl.d/zz-stig-hardening.conf
Note: If the file zz-stig-hardening.conf does not exist, it must be created.
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_8-0_Y24M08_STIG.zip
Item Details
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-258890r991589_rule, STIG-ID|PHTN-40-000227, Vuln-ID|V-258890
Plugin: Unix
Control ID: d77e0dc2436c1ce71f97029f5715bc2c2387834f1e5b43d3fbfc411cea89cf8d