Secure
21 (FTP)
This port is completely invisible to the outside world.
Open and Unsecure!
23 (Telnet)
This port is not being blocked and there is a program accepting connections on this port.
Secure
25 (SMTP Mail Server Port)
This port is completely invisible to the outside world.
Closed but Unsecure
79 (Finger)
This port is not being blocked, but there is no program currently accepting connections on this port.
Secure
80 (HTTP)
This port is completely invisible to the outside world.
Secure
110 (POP3 Mail Server Port)
This port is completely invisible to the outside world.
Secure
139 (Net BIOS)
This port is completely invisible to the outside world.
Secure
143 (IMAP)
This port is completely invisible to the outside world.
Open and Unsecure!
443 (HTTPS)
If this computer is not supposed to be acting as a web server you should not have this port open.
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