IP, the Internet Protocol, underpins all modern communication technology. This course teaches some of the theory behind building IP networks.

From small home networks to global telecommunications, IP is at the heart of modern communication. This course assumes that you are already familiar with the basics and will teach you skills such as subnetting, what NAT is, how routing works and much more.


Binary is just another way of counting. Instead of using base-10, we use base-2 where each place value is a bit.
CDP and LLDP are similar layer two protocols for discovering information about neighboring devices.
Learn how to design subnets and calculate the number of hosts on each.
VLSM lets us make more efficient use of our IP addresses.
The traceroute command is useful tool installed on hosts and network devices for troubleshooting networking issues by tracing the route of a packet across a network.
RIP was one of the first routing protocols to be implemented. RIPv2 later added a number of improvements.
Access control lists (ACLs) provide a simple but effective layer of security in modern networks.
NAT is the mapping of one address to another. It is a useful tool for conserving IP address space.
Firewalls play an important part in protecting modern computer networks.
To let devices on one VLAN talk to the devices on another, we need to be able to route between them.