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Firewalld is a complete firewall solution available by default on CentOS and Fedora servers. In this guide, we will cover how to set up a basic firewall for your server and show you the basics of managing the firewall with firewall-cmd, its command-li

Source: How To Set Up a Firewall Using FirewallD on CentOS 7 | DigitalOcean

CentOS, Firewall, security

Linux: Changing UIDs and GIDs for a user by Stuart Colville Docker comme solution de virtualisation : les volumes