Networking

Networking is how we reliably move data between computers over unstable and sometimes untrusted connections managed by strangers.

Slides

09 Networking Introduction
- Packets, IP addressing, OSI network model, TCP
10 Networking
- Ports, NAT, Autonomous Systems, BGP Routing
11 Networking
- Threat Models, VPNs, Onion Routing, Denial of Service, Firewalls

CS4G Network Simulator - an easy to understand and play simulator game that takes you through some of the most basic attacks in networking such as spoofing and a man in the middle attack
Permission Impossible - a simple drag-and-drop game designed to teach firewall concepts and rules
Blue Team - a more complicated firewall game that has you set firewall policies for multiple computers in a network, upper levels include some simple interaction with an intrusion detection system

A single point of failure triggered the Amazon outage affecting millions Amazon Web Service (AWS) went down for 15 hours due to a race condition and DNS.

Clark, David. “The design philosophy of the DARPA Internet protocols.” Symposium proceedings on Communications architectures and protocols. 1988.
Mockapetris, Paul, and Kevin J. Dunlap. “Development of the domain name system.” Symposium proceedings on Communications architectures and protocols. 1988.