Port Scan
This server will now attempt to open several common ports on your computer. The results of these attempts will be displayed on this page as Open, Closed, or Secure:
If your firewall is configured to block a port, and it is operating correctly, you will see Secure and an event will be logged on your firewall.
A Closed port indicates that the port is reachable but there is no program currently accepting connections there.
If the port is indicated as Open there is an application or service on your computer actively accepting connections.
The time to check each port will range from less than a second up to 20 seconds. Ports which are Secure will take the most time.
Closed but Unsecure
21 (FTP)
This port is not being blocked, but there is no program currently accepting connections on this port.
Open and Unsecure!
23 (Telnet)
This port is not being blocked and there is a program accepting connections on this port.
Closed but Unsecure
25 (SMTP Mail Server Port)
This port is not being blocked, but there is no program currently accepting connections on this port.
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.
Closed but Unsecure
110 (POP3 Mail Server Port)
This port is not being blocked, but there is no program currently accepting connections on this port.
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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