Essential for operation and maintenance: 20 commonly used service ports and their corresponding service information
Essential for operation and maintenance: 20 commonly used service ports and their corresponding service information
During the operation and maintenance process, it is crucial to understand common ports and their corresponding services. A port is the interface through which a computer communicates with the network, while a service is an application that runs on a specific port. This article introduces 20 ports and their corresponding services that are frequently used in operation and maintenance work to help you better manage and maintain the system.
Commonly used ports and services list
(1) Port number: 21
Service name: FTP
Service Description: File transfer protocol, used to transfer files between clients and servers.
(2) Port number: 22
Service Name: :SSH
Service Description: Secure Shell protocol for secure remote login and command execution in the network.
(3) Port number: 23
Service name: Telnet
Service description: Used to remotely log in to the remote host and execute commands.
(4) Port number: 25
Service name: SMTP
Service Description: Simple Mail Transfer Protocol, used for sending email.
(5) Port number: 53
Service name: DNS
Service description: Domain name system, used to resolve domain names into corresponding IP addresses.
(6) Port number: 80
Service name: HTTP
Service Description: Hypertext Transfer Protocol, used to transfer data between web browsers and web servers.
(7) Port number: 110
Service name: POP3
Service Description: Post Office Protocol version 3, used to receive emails from mail servers.
(8) Port number: 143
Service name: IMAP
Service Description: Internet Message Access Protocol, used to receive and manage email from mail servers.
(9) Port number: 161
Service name: SNMP
Service Description: Simple Network Management Protocol, used to manage and monitor network devices.
(10) Port number: 443
Service name: HTTPS
Service Description: Secure Hypertext Transfer Protocol protects Web data transmission through encrypted communication.
(11) Port number: 465
Service name: SMTPS
Service Description: An encrypted version of SMTP for sending email securely.
(12) Port number: 587
Service name: SMTP
Service Description: Another common port for SMTP, used for sending emails.
(13) Port number: 993
Service name: IMAPS
Service Description: An encrypted version of IMAP for securely receiving and managing email.
(14) Port number: 995
Service name: POP3S
Service Description: An encrypted version of POP3 for receiving email securely.
(15) Port number: 1433
Service name: MSSQL
Service Description: The default port of the Microsoft SQL Server database management system.
(16) Port number: 1521
Service name: Oracle
Service description: The default port of the Oracle database management system.
(17) Port number: 3306
Service name: MySQL
Service description: The default port of the MySQL database management system.
(18) Port number: 3389
Service name: RDP
Service Description: Remote Desktop Protocol, used to access and control computers remotely.
(19) Port number: 5432
Service name: PostgreSQL
Service description: The default port of the PostgreSQL database management system.
(20) Port number: 8080
Service name: HTTP
Service description: Alternative port for HTTP, commonly used in proxy servers and development environments.
My summary
It is very important for operation and maintenance personnel to understand common ports and their corresponding services. By having basic knowledge of these ports and services, you can better diagnose and solve network and system problems. At the same time, proper configuration and management of these services can also improve system security and performance. I hope this article will be helpful to your operation and maintenance work!