Detections
Analytics
PHTN-67-000108 - The Photon operating system must not send IPv4 Internet Control Message Protocol (ICMP) redirects - net.ipv4.conf.all.send_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
Open /etc/sysctl.conf with a text editor.Add or update the following lines:
net.ipv4.conf.all.send_redirects = 0
net.ipv4.conf.default.send_redirects = 0
net.ipv4.conf.eth0.send_redirects = 0
Run the following command to load the new setting:
# /sbin/sysctl --load
See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_VMW_vSphere_6-7_Y23M07_STIG.zip
Item Details
Audit Name: DISA STIG VMware vSphere 6.7 Photon OS v1r6
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-239179r816664_rule, STIG-ID|PHTN-67-000108, Vuln-ID|V-239179
Plugin: Unix
Control ID: 2dc7c95491d85564aa7c86b1e53dfb072e397c50474d64b7e572ab1a0e2f934e