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TCP/IP Unleashed: Packets That Own The Wire

Stop memorizing diagrams. Read raw packet dumps. Debug networks at the bit level. From SYN floods to BGP hijacks — own the protocol stack that runs the world.

Engineer7 Modules4 hours

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Wire-Level Truth: From Memory Stack to Raw Bytes

LIFO across two worlds. Raw sockets, kernel code paths, byte-by-byte dissection. Build the stack, then read it on the wire.

The Invisible Conversation: TCP Handshake & TLS

SYN, SYN-ACK, ACK. Sequence numbers. TLS 1.3 key exchange. What happens before your data moves — captured in real packets.

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IP Exposed: Fragmentation, TTL Tricks & Address Reality

Header fields that matter. Why fragmentation kills performance. TTL as a traceroute weapon. Private vs public vs NAT butchery.

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TCP State Machine: 11 States & Connection Attacks

Full state machine. Sequence number prediction. SYN cookies. Connection hijacking. Watch a kernel collapse under half-open connections.

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Congestion Control Wars: Reno vs CUBIC vs BBR

CWND collapse, bufferbloat, slow-start hell. Why your "fast" fiber feels slow. BBR vs loss-based algorithms — who wins the pipe.

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UDP, QUIC & DNS: Speed Over Reliability

UDP header simplicity. DNS cache poisoning. Why QUIC builds TCP on UDP. When connectionless beats connection-oriented.

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Routing Anarchy: BGP Hijacks, OSPF Domains & AS Warfare

Autonomous Systems. How YouTube got hijacked. BGP path selection manipulation. OSPF area design that survives fiber cuts.

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