OVALFileLinker from SCAP Security Guide ssg: [0, 1, 80], python: 3.10.12 5.11.2 2025-11-23T12:44:14 Install iptables-persistent Package Ubuntu 22.04 The DPKG package iptables-persistent should be installed. oval:ssg-var_network_filtering_service:var:1 iptables-persistent iptables