Port Numbers & Multiplexing | Teleinf Edu
Well-known, registered, and dynamic ports; ephemeral allocation and demultiplexing logic.
2 min
Transport
TCP, UDP, checksums, sockets, and host-to-host delivery behavior across packet networks.
Articles: 18
Articles in this category
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TCP/IP Checksum | Teleinf Edu
The ones complement method for error detection in transport and network layers.
3 min
Transmission Control Protocol (TCP) | Teleinf Edu
Reliable, connection-oriented transport: header, 3-way handshake, flags, and flow control.
3 min
TCP Header Structure | Teleinf Edu
Detailed analysis of TCP header fields: sequence/ack numbers, flags, window, checksum, MSS, and options.
3 min
TCP State Machine | Teleinf Edu
The full TCP finite state machine: LISTEN, SYN-SENT, ESTABLISHED, FIN-WAIT, CLOSE-WAIT, LAST-ACK, TIME-WAIT transitions.
3 min
TCP Flow Control | Teleinf Edu
Sliding window mechanism and flow control in TCP connections.
3 min
TCP Congestion Control | Teleinf Edu
Slow start, congestion avoidance, and fast recovery algorithms.
3 min
TCP Retransmission & Reliability | Teleinf Edu
Fast retransmit, fast recovery, duplicate ACK logic, and selective acknowledgments (SACK).
3 min
TCP Timers | Teleinf Edu
Role of RTO, RTT estimation (Jacobson/Karels), keep-alive, persistence, and TIME-WAIT timer.
3 min
TCP Options | Teleinf Edu
Operational extensions: MSS, Window Scale, Timestamps, SACK Permitted, Selective ACK, Fast Open.
3 min
TCP Security & Hardening | Teleinf Edu
Mitigations against SYN flood, RST injection, sequence prediction attacks; SYN cookies and best practices.
3 min
User Datagram Protocol (UDP) | Teleinf Edu
Connectionless, best-effort transport for real-time applications and its simple header.
3 min
UDP Header Format | Teleinf Edu
Understanding length, source/destination ports, checksum, and pseudo-header usage.
3 min
UDP Applications | Teleinf Edu
Real-time applications using UDP: streaming, gaming, and VoIP.
3 min
Socket Programming | Teleinf Edu
Network programming interfaces and socket APIs for TCP and UDP.
3 min
Socket Options | Teleinf Edu
Configurable behaviors via setsockopt: timeouts, buffers, KEEPALIVE, NODELAY, and broadcast.
3 min
Stream Control Transmission Protocol (SCTP) | Teleinf Edu
Multi-streaming transport protocol combining TCP and UDP features.
3 min
QUIC Protocol | Teleinf Edu
Quick UDP Internet Connections: Google's low-latency transport protocol.
3 min