Internet Protocols
Coursera
A ten-module course from BITS Pilani that walks through the networking stack, from physical transmission through TCP and UDP, IP addressing and routing, to application protocols. Learners practice packet analysis in Wireshark and socket programming, and study wireless networking and security protocols.
More resources on Internet Protocols
Wireshark User's Guide
Official documentation for Wireshark, the open-source network protocol analyzer, covering installation, capturing live traffic, display and capture filters, packet dissection and statistics. Readers learn to capture packets and inspect how protocols such as TCP, DNS and HTTP behave on the wire.
Beej's Guide to Network Programming
A free, long-running guide by Brian "Beej" Hall to sockets programming in C, covering TCP and UDP sockets, addressing, client-server structure, and IPv4/IPv6 differences. Readers learn to write working networked programs and understand how applications use the sockets API.
CS144: Introduction to Computer Networking
Learn internet protocols and computer networking fundamentals with Nick McKeown's CS144 course. Explore network architecture and design!
The Bits and Bytes of Computer Networking
Introductory course from Google's IT Support certificate on how computer networks work, covering the five-layer TCP/IP model, Ethernet, IP addressing and subnetting, TCP and UDP, DNS and DHCP, NAT, and troubleshooting tools. Learners can explain and diagnose everyday network connectivity problems.
Internetworking with TCP/IP
Douglas Comer's classic textbook (Volume 1, 4th edition) on the TCP/IP protocol suite, covering IP addressing, routing, ICMP, UDP, TCP, IPv6, and IPsec. Readers gain a conceptual understanding of how internetworks are designed and why the core protocols behave as they do.
ietf.org
IETF.org is the official site of the Internet Engineering Task Force, where Internet standards and protocol specifications are published as RFCs and evolving working group drafts. It offers information on working groups, standards tracks, meeting materials, and governance for Internet protocols.