Client Ports and Protocols
Data sent across the network using the TCP or UDP protocol is transmitted in discrete units of data called packets. Each packet includes the following:
• A body that contains the actual data
• A header with addressing and other control information
The header includes the IP addresses of the source and destination machines as well as the port numbers of the source and destination services or applications. A port number is a number from 1 to 65535 used to identify the application. An application or service “listens” on a specific port if it has registered with the operating system to receive packets addressed to that port. Like many services, ConfigMgr services have standard ports on which they listen by default.
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