Contents tagged with open

• Commonly Open Ports

  Tags: open, ports, common, frequently

  Monday, June 10, 2019 10:36:29 PM

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  TCP 20 and 21 (File Transfer Protocol, FTP)

  TCP 22 (Secure Shell, SSH)

  TCP 23 (Telnet)

  TCP 25 (Simple Mail Transfer Protocol, SMTP)

  TCP and UDP 53 (Domain Name System, DNS)

  UDP 69 (Trivial … more