Basic port scanning - Or how to check the security of our Linux server against unauthorized intruders (page 2)
When checking ports from the outside, we perform a port scan on the computer to be checked to find out which ports are open, which services monitor these ports, etc. Port scanning is usually performed by system administrators to check the security of the server, but unfortunately, it is also often used by malicious attackers to map the weak points of the selected target computer. On this page, we review the basic use of the various implementations of the Netcat program.
