This article describes security related stuff about server and workstation.

Table of Cotents


  • firewalld
    • a dynamic firewall daemon
    • provides a dynamically managed firewall with support for network zones to assign a level of trust to a network and its associated connections and interfaces
    • support Ethernet bridges
    • has a separation of runtime and permanent configuration options
    • has an interface for services or applications to add firewall rules directly
    • configure files
      • /usr/lib/firewalld
      • /etc/firewalld
    • other applications use DBus to communicate with firewalld
    • can change settings during runtime without connections being lost
system-config-firewall  firewall-config firewall-cmd
         |                     |             |
         v                     v             v
  iptables(service)      firewalld(daemon & service)
          \                          /