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3.5.3.1.1 Ensure iptables packages are installed

Audit#

Run the following command to verify that iptables and iptables-persistent are installed: 

# apt list iptables iptables-persistent | grep installed
iptables-persistent/<version> [installed,automatic]
iptables/<version> [installed,automatic]

Remediation#

Run the following command to install iptables and iptables-persistent 

# apt install iptables iptables-persistent