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Knowledge: commonly used software or services and their ports

Source: Internet
Author: User
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Note: The following port refers to the TCP port.
Web Service: http port: 80, https port: 443, providing service software IIS, Apache.
FTP service: Connection Control port: 21, active mode data transmission port: 20, PASV mode data transmission, default port greater than 1024, you can also customize the available port. Common Software: Server-U.
Mail service: Pop port: 110, SMTP port: 25, common software Postfix, Qmail, IMail, webeasymail.
Windows terminal (Remote Desktop) Service: Port: 3389.
PCAnywhere service: Port: 5631,5632.
SSH service: port 22.
Telnet Service: Port: 23.
DNS Service: Port: 53.
MySQL database: Port 3306.
Microsoft SQL Server database: port 1433.

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