common ports used by services

• How to find out what service is using a certain port?
• How to change Node Exporter port
• How to change Next.js port

Here are common ports used by various software and services.

21 FTP Server

25 SMTP SERVER, EXIM, MAIL ENABLE, HMAILSERVER, etc

53 DNS SERVER

80 WEB SERVER (iis, apache)

110 POP3

135 Windows RPC, Remote Procedure Calls

139 NetBIOS Session (TCP), Windows File and Printer Sharing

143 IMAP

445 Windows Server Message Block, NetBIOS, File Sharing

1433 MS SQL

3306 MYSQL

3389 DRP, Windows Remote Desktop

8081 Error loading stylesheet: Parsing an XSLT stylesheet failed. (on windows 2003 servers)

8086 HELM Control Panel (windows)

9418 git demon port