A port scanner is software designed to probe the ports on a networked computer using packets of data. It can be used by a malicious third-party to search a system for vulnerabilities, or by a system owner to test network security.

Network terms, Port, Security terms, Sniffing

  • An example of a port scanner is the Linux and Unix nmap command.
  • How to protect yourself while on the Internet.
  • Network and network card help and support.
  • Computer security help and support.