Protocol Glossary
Network Protocol Terms
Concise definitions of common network protocol terms and concepts.
Term
Source Port - Definition, Range, and Usage in Networking
Learn what a source port is in TCP and UDP protocols. Understand port number ranges (0-65535), well-known ports, and how source ports enable bidirectional communication.
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Term
Destination Port - Definition, Range, and Usage in Networking
Learn what a destination port is in TCP and UDP protocols. Understand how destination ports identify services, well-known port numbers, and port-based routing.
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TCP
TCP Flags Explained - SYN, ACK, FIN, RST, PSH, URG
Complete guide to TCP control flags: SYN, ACK, FIN, RST, PSH, and URG. Learn what each flag means, when it is used, and how flags control TCP connection state.
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