Aug 11, 2019
How to View TCP and UDP Ports in Ubuntu Linux? Nov 07, 2019 How to Find IP Address in Linux Command Line Mar 31, 2019
How To Find Which Service Is Listening On - Linux And Unix
As a side note, netstat -ao will read the /proc/PID/tcp etc to see the ports opened by the process. This means that its reading information supplied by the system (the linux KERNEL), and is in no way directly looking on the network interface or other means. Same goes for lsof. If you are doing this as a security measure, you failed.
How To Check and List Listening Ports with Netstat In Linux
Sep 25, 2019 · l- Shows listening sockets. t - Displays TCP connections. u - Displays UDP connections. 3) Check open ports using the lsof command. The lsof command is a network command tool that can also be used to check open ports in a Linux system. To display open ports, issue the command $ lsof -i. Sample output