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The operating system must connect to external networks or information systems only through managed IPv4 interfaces consisting of boundary protection devices arranged in accordance with an organizational security architecture.


Finding ID Version Rule ID IA Controls Severity
V-217931 RHEL-06-000116 SV-217931r505923_rule Medium
The "iptables" service provides the system's host-based firewalling capability for IPv4 and ICMP.
Red Hat Enterprise Linux 6 Security Technical Implementation Guide 2020-09-03


Check Text ( C-19412r376808_chk )
If the system is a cross-domain system, this is not applicable.

Run the following command to determine the current status of the "iptables" service:

# service iptables status

If the service is not running, it should return the following:

iptables: Firewall is not running.

If the service is not running, this is a finding.
Fix Text (F-19410r376809_fix)
The "iptables" service can be enabled with the following commands:

# chkconfig iptables on
# service iptables start