Common ECS Ports
Table 1 lists some high-risk ports that are blocked by default. Even if you have added a security group rule to allow access over these ports, traffic over these ports in restricted regions is still denied. In this case, do not use these high-risk ports for your services.
Protocol | Port |
---|---|
TCP | 42, 135, 137, 138, 139, 444, 445, 593, 1025, 1068, 1433, 1434, 3127, 3128, 3129, 3130, 4444, 4789, 5554, 5800, 5900, 8998, 9995, and 9996 |
UDP | 135~139 1026 1027 1028 1068 1433 1434 4789 5554 9995 9996 |
Common Ports
Table 2 lists the common ports used by ECSs. You can configure security group rules to allow traffic to and from specified ECS ports. For details, see Adding a Security Group Rule.
Port | Protocol | Description |
---|---|---|
21 | FTP | Used by FTP services for uploading and downloading files. For configuration examples, see Remotely Connecting to an ECS from a Local Server to Upload or Download Files over FTP. |
22 | SSH | Used to remotely connect to Linux ECSs. For configuration examples, see Remotely Logging In to an ECS from a Local Server. |
23 | Telnet | Used to remotely log in to ECSs. |
80 | HTTP | Used to access websites over HTTP. For configuration examples, see Setting Up a Website on an ECS to Provide Internet-Accessible Services. |
110 | POP3 | Used to receive emails using Post Office Protocol version 3 (POP3). |
143 | IMAP | Used to receive emails using Internet Message Access Protocol (IMAP). |
443 | HTTPS | Used to access websites over HTTPS. For configuration examples, see Setting Up a Website on an ECS to Provide Internet-Accessible Services. |
1433 | SQL Server | A TCP port of the SQL Server for providing services. For configuration examples, see Allowing External Instances to Access the Database Deployed on an ECS. |
1434 | SQL Server | A UDP port of the SQL Server for returning the TCP/IP port number used by the SQL Server. For configuration examples, see Allowing External Instances to Access the Database Deployed on an ECS. |
1521 | Oracle | Used for Oracle database communications. This port must be enabled on the ECSs where Oracle SQL Server is deployed. For configuration examples, see Allowing External Instances to Access the Database Deployed on an ECS. |
3306 | MySQL | Used by MySQL databases to provide services. For configuration examples, see Allowing External Instances to Access the Database Deployed on an ECS. |
3389 | Windows Server Remote Desktop Services | Used to connect to Windows ECSs. For configuration examples, see Remotely Logging In to an ECS from a Local Server. For details about how to log in to a Windows ECS, see . |
8080 | Proxy | Used by the WWW proxy service for web browsing, like port 80. If you use port 8080, you need to add :8080 after the IP address when you visit a website or use a proxy server. If Apache Tomcat is installed, its default service port is 8080. |
137, 138, and 139 | NetBIOS | Used for Windows files, printer sharing, and Samba.
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- Common Ports