Finding ID | Version | Rule ID | IA Controls | Severity |
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V-22583 | GEN008540 | SV-37985r1_rule | ECSC-1 | Medium |
Description |
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A local firewall protects the system from exposing unnecessary or undocumented network services to the local enclave. If a system within the enclave is compromised, firewall protection on an individual system continues to protect it from attack. |
STIG | Date |
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Red Hat Enterprise Linux 5 Security Technical Implementation Guide | 2016-06-01 |
Check Text ( C-37287r3_chk ) |
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Check the firewall rules for a default deny rule. # iptables --list Example of a rule meeting this criteria: REJECT all -- anywhere anywhere reject-with icmp-host-prohibited A rule using DROP is also acceptable. The default rule should be the last rule of a table and match all traffic. If there is no default deny rule, this is a finding. |
Fix Text (F-32525r2_fix) |
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Edit "/etc/sysconfig/iptables" and add a default deny rule. An example of a default deny rule: -A RH-Firewall-1-INPUT -j REJECT --reject-with icmp-host-prohibited Restart the iptable service. # service iptables restart |