December 2018
Beginner
320 pages
8h 57m
English
Content preview from CentOS Quick Start Guide
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Firewalld concepts
In CentOS 7, a new utility called firewalld has been introduced to interact with netfilter. It can be used to configure and monitor the firewall rules for IPv4, IPv6, and for software bridges. Furthermore, applications can interact with firewalld to add or change firewall rules, such as a requesting for a port opening with the help of the D-bus messaging system. firewalld supports both runtime configuration and persistence configuration. It is installed by default in the CentOS Base installation, but if it is not available, then user can install it is using the following command lines:
# yum install firewalld -y# systemctl start firewalld # systemctl enable firewalld
firewalld is not compatible with the iptables service, ...
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