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Which common ports should the server open
2022-07-05 02:11:00 【Yi Yue Wang Chao】
The following is a list of commonly used ports of the server :
port service explain
21 FTP FTP The port opened by the service , For uploading 、 Download the file .
22 SSH SSH port , Used in command line mode Remote connection Linux Server or vps.
23 Telnet Telnet port , be used for Telnet Remote login server .
25 SMTP SMTP The port opened by the service , For sending mail .
80 HTTP be used for HTTP Provide access to services , for example ,IIS、Apache、Nginx Etc . You can refer to Check TCP 80 Whether the port is working properly screening 80 Port failure .
110 POP3 be used for POP3 agreement ,POP3 It's an e-mail protocol .
143 IMAP be used for IMAP(Internet Message Access Protocol) agreement ,IMAP Is a protocol for receiving e-mail .
443 HTTPS be used for HTTPS Provide access to services .HTTPS It is a protocol that can provide encryption and transmission through secure ports .
1433 SQL Server SQL Server Of TCP port , For SQL Server External services .
1434 SQL Server SQL Server Of UDP port , For return SQL Server Which one was used TCP/IP port .
1521 Oracle Oracle Communication port , Deployed on the server Oracle SQL Ports that need to be released .
3306 MySQL MySQL The port where the database provides services to the outside world .
3389 Windows Server Remote Desktop Services Windows Server Remote Desktop Services( Remote desktop service ) port , You can connect to the server remotely through this port
8080 The proxy port Same as 80 Same port ,8080 Ports are often used for WWW Agency service , Realize web browsing . If you use 8080 port , When visiting a website or using a proxy server , Need to be in IP Add... After the address :8080. install Apache Tomcat After service , The default service port is 8080.
137、138、139 NetBIOS agreement 137、138 by UDP port , The port used to transfer files through the network neighborhood .139 The connection entered through this port attempts to obtain NetBIOS/SMB service .NetBIOS Protocols are often used to Windows file 、 Printer sharing and Samba.
For safety , It is recommended that the client turn on the firewall , Just add common ports to firewall exceptions or inbound rules . For example, webmasters generally only open :80、22、21、3306、1433 Wait for the port ...
In addition, according to the different requirements of the deployment project , You may also need to open other ports , for example redis port , Or configure load balancing, etc .
The specific port opening depends on the security group settings of the server , The security group settings of different cloud service providers are also different . Please check the server security group yourself when using .
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