Becoming Linux System Administrator: Networking (part III)
5 min readJun 5, 2024
Previously, we learned how to configure the hostname and DNS. In this post, network ports and DHCP are discussed in continuation.
This post is a chapter of “Becoming Linux System Administrator” (full list).
Network Ports
The hosts on a network can be identified with IP addresses. On the other hand, the services on a host can be identified by the ports. Therefore, a service binds to a port when it starts, listening to traffics flowing through that port.
Ports in total range from 1 to 65,535. The system ports, ranged from 1 to 1,023, are used for common system services. These ports can be opened with superuser privileges. In contrast, ports above 1,024 can be opened by ordinary users on a system.
One can check an exhaustive list of ports below:
