CCNA 2 Chapter 19 Intermediate TCP/IP By Your Name
Objectives TCP operation Transport layer ports
TCP/IP Operation The transport layer is responsible for the reliable transport of and regulation of data flow from source to destination.
TCP Three-Way Handshake/Open Connection
Denial-of-Service Attacks Denial-of-service (DoS) attacks are designed to deny services to legitimate hosts attempting to establish connections.
Acknowledgment Numbers 23 1028
TCP Simple Acknowledgment
Transport Layer Ports
Port Numbers Numbers below 255 are reserved for public applications. Numbers from 255–1023 are assigned to companies for marketable applications. Numbers above 1023 are unregulated.
Ports for Clients:TCP and UDP Segment Format UDP TCP