About important port numbers

Your system uses specific ports when it communicates with computers, cameras and other devices. To be sure that your system runs as smoothly as possible, make sure that the following ports are open for data traffic on your network when you use your system:

Name	Description
Port 20 and 21 (inbound and outbound)	Used for FTP traffic. File Transfer Protocol (FTP) is a standard for exchanging files across networks. FTP uses the TCP/IP standards for data transfer, and is often used for uploading or downloading files to and from servers.
Port 25 (inbound and outbound)	Used for SMTP traffic. Simple Mail Transfer Protocol (SMTP) is a standard for sending e-mail messages between servers. This port should be open because some cameras may send images to the surveillance system server via e-mail.
Port 80 (inbound and outbound)	Used for HTTP traffic between the surveillance server, cameras, and XProtect Smart Client. It is the default communication port for the surveillance system's Image Server service.
Port 443 (outbound)	Used for HTTPS traffic. This port should be open to communicate with the License server via https://www.milestonesys.com/OnlineActivation/LicenseManagementService.asmx The License server hosts the License Management service which is used for activating licenses. Process: Management Application Outbound communication with Milestone Customer Dashboard via https://service.milestonesys.com . Process: Recording server
Port 554 (inbound and outbound)	Used for RSTP traffic in connection with H.264 video streaming.
Port 1024 (outbound only)	Used for HTTP traffic between cameras and the surveillance server.
Port 1234 (inbound and outbound)	Used for event handling.
Port 1237 (inbound and outbound)	Used for communication with XProtect Central.
Port 8081 and 8082	Used for communication with the Mobile Server service.
Port 22331	Used for communication with the Event Server service.

You or your organization may also use other port numbers. An example could be that you have changed the server access port from its default port number (80) to another port number.