What types of firewalls are there in centos?

The firewalls in centos include: 1. iptables, a packet filtering firewall in the Linux platform; 2. firewalld, a firewall with both a command line terminal and a graphical interface; 3. ebtables, a Ethernet bridge firewall.

#The operating environment of this tutorial: centos7 system, thinkpad t480 computer.

The firewalls in centos include the following types

1. iptables

iptables is a The core layer of the packet filtering firewall in the Linux platform is a packet processing module, which has the functions of network address conversion, packet content modification, packet filtering firewall and other functions.

2. firewalld

firewalld is a firewall that has both a command line terminal and a graphical interface. It uses the concept of trust level to manage the associated Connections and interfaces, and support for bridges, can dynamically modify a single rule.

3. ebtables

ebtables is an Ethernet bridge firewall. By filtering data packets at the data link layer, it can clearly distinguish the source address and destination address. The source port and destination port can also filter TCP and UDPP data packets separately.

Recommended: "centos usage tutorial"

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