How To Find Open Network Ports In Linux?

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I have some servers and installed web services and pages on them. I have open the web services into internet. But I have some worry about the ports open in the systems. How can I get open network ports on systems?

List Tcp and Udp Ports With Protocol Names

We can list open ports with netstat command. It is very helpful command for a lot of system administrators.

This command will list all open tcp, udp and ipv4, ipv6 ports. 0.0.0.0 specifies ipv4 all interfaces. [::] means ipv6 all interfaces.

LEARN MORE  Linux Mint

List Open Tcp Udp Ports With Port Numbers

Other way is to list port numbers not protocol names related with port.

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