Later, the Transmission Control Protocol (TCP) and the User Datagram Protocol (UDP) needed only one port for full-duplex, bidirectional traffic.The even-numbered ports were not used, and this resulted in some even numbers in the well-known port number range being unassigned.This update adds support for LVM thin pools, enforces use of regular ethernet device names, improves Virt IO configuration, handles bridge and VG changes when restoring VMs on a new host, and fixes a bunch of small bugs.
This article lists port numbers and their associated protocols that have experienced significant uptake.
You can always inspect the code and make sure it's backdoor free and has no spying modules.
For example it comes with smart filters for various services (apache, exim, ssh, etc) in order to ban any host IP address that makes too many login attempts.
Webmin removes the need to manually edit Unix configuration files like , and lets you manage a system from the console or remotely.
See the standard modules page for a list of all the functions built into Webmin.