Network Protocols
TCP/IP, DNS, HTTP, TLS, BGP, OSPF and the protocols the internet runs on.
Network Protocols articles
Network Protocols· 3 min read
DHCP DORA: How a Host Gets Its Address
The four DHCP packets, the renewal timers, why relays exist, and the tcpdump filter to watch it happen.
October 24, 2026Network Protocols· 3 min read
The TCP Three-Way Handshake, Explained
A packet-level walk through TCP connection setup — sequence numbers, the MSS option, and reading a handshake in tcpdump.
October 24, 2026Network Protocols· 3 min read
How NAT Actually Works
NAT is a stateful rewrite plus a connection-tracking table. What that table holds, why it fills up, and the protocols NAT quietly breaks.
September 7, 2026← NewerPage 3 of 3