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The systems local firewall must implement a deny-all, allow-by-exception policy.
Overview
| Finding ID | Version | Rule ID | IA Controls | Severity |
|---|---|---|---|---|
| V-22583 | GEN008540 | SV-46060r1_rule | Medium |
| Description |
|---|
| 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 |
|---|---|
| SUSE Linux Enterprise Server v11 for System z | 2016-12-20 |
Details
| Check Text ( C-43325r1_chk ) |
|---|
| Check the firewall rules for a default deny rule. # iptables --list If there is no default deny rule, this is a finding. |
| Fix Text (F-39416r1_fix) |
|---|
| Edit “ /etc/sysconfig/scripts/SuSEfirewall2-custom” and add a default deny rule. Restart the SuSEfirewall2 service # rcSuSEfirewall2 restart |