Finding ID | Version | Rule ID | IA Controls | Severity |
---|---|---|---|---|
V-22418 | GEN003611 | SV-45728r1_rule | Low |
Description |
---|
Martian packets are packets containing addresses known by the system to be invalid. Logging these messages allows the SA to identify misconfigurations or attacks in progress. |
STIG | Date |
---|---|
SUSE Linux Enterprise Server v11 for System z | 2016-12-20 |
Check Text ( C-43095r1_chk ) |
---|
Verify the system logs martian packets. # grep [01] /proc/sys/net/ipv4/conf/*/log_martians|egrep "default|all" If all of the resulting lines do not end with "1", this is a finding. |
Fix Text (F-39126r1_fix) |
---|
Configure the system to log martian packets. Edit /etc/sysctl.conf and add a setting for "net.ipv4.conf.all.log_martians=1" and "net.ipv4.conf.default.log_martians=1". Reload the sysctls. Procedure: # sysctl -p |