Netstat is a tool that allows to know the active TCP connections on the machine on which the command is enabled and thus to list all TCP and UDP ports are open on the computer. The “netstat” command also lets you obtain statistics on a number of protocols (Ethernet, IPv4, TCP, UDP, ICMP and IPv6). ### The Netstat package search APT (acronym for Advanced Package Tool) is a tool to manage Debian packages, and therefore all the applications installed on your Debian system (in this case Ubuntu).
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