obsoleted by
- rfc-9293 — Transmission Control Protocol (TCP)
obsoletes
- rfc-761 — DoD standard Transmission Control Protocol
updated by
- rfc-1122 — Requirements for Internet Hosts - Communication Layers
- rfc-3168 — The Addition of Explicit Congestion Notification (ECN) to IP
- rfc-6093 — On the Implementation of the TCP Urgent Mechanism
- rfc-6528 — Defending against Sequence Number Attacks