Finding ID | Version | Rule ID | IA Controls | Severity |
---|---|---|---|---|
V-67747 | AOSX-11-001211 | SV-82237r1_rule | Medium |
Description |
---|
ICMP redirects are broadcast in order to reshape network traffic. A malicious user could use the system to send fake redirect packets and try to force all network traffic to pass through a network sniffer. Disabling ICMP redirect broadcasts mitigates this risk. |
STIG | Date |
---|---|
Apple OS X 10.11 Security Technical Implementation Guide | 2017-07-11 |
Check Text ( C-68313r1_chk ) |
---|
To check if the system is configured to send "ICMP redirects", run the following command: sysctl net.inet6.ip6.redirect If the values are not set to "0", this is a finding. |
Fix Text (F-73861r1_fix) |
---|
To configure the system to not send "ICMP redirects", add the following line to "/etc/sysctl.conf", creating the file if necessary: net.inet6.ip6.redirect=0 |