December 2018
Beginner
320 pages
8h 57m
English
Content preview from CentOS Quick Start Guide
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Firewalld services
The other main component of firewalld is services. There are certain default services that are used to allow or deny access to traffic on specific ports, for a particular network service in the firewall. Each service has got a configuration file that describes its requirements, such as what TCP or UDP ports are required for service operation. Users can list all the available services in firewalld with the command shown in the following screenshot:
For the secure configuration of firewalld, each service should be allowed access in the correct zone.
The services configuration file is stored in the following two directories: ...
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