RITx: Cybersecurity Fundamentals, Unit 4&5— Course notes


Xavier Briand
Mar 4, 2019 · 4 min read

OSI Layer 1&2: Ethernet

Media Access Control (MAC) address


OSI Layer 3: Internet Protocol (IP)

IP address

IPv4 addresses

IPv6 addresses

Subnet communication

IPv4: Address Resolution Protocol (ARP)

IPv6: Neighbor Discovery Protocol (NDP)

IP routing

Autonomous Systems (AS)

Network Address Translation (NAT)

OSI Layer 4: TCP/UDP

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