Network Security Fundamentals

#cybersecurity #networking #networksecurity #topology

The Connected Globe

With more than 5 billion internet users worldwide in 2022, which represents well over half of the world population , the internet connects
businesses, governments and people across the globe.
Over reliance on internet will continue to grow, with nearly 30 billion devices and "things".
Including autonomous vehicles, household appliances and wearable technology, and more connecting to the internet of things(IoT).
Nearly 9 billion worldwide smartphone subscriptions using a total of 160 exabytes(EB) of monthly data by 2025.

The Net: How Things Connect

In the 1960s, the U.S. Defence Advanced Research Project Agency(DARPA)
created ARPANET, the precursor to the modern internet.
ARPANET was the first packet-switched network which breaks data into small blocks(packets),transmits each individual packets from node to node towards its destination

Hands-on debugging session: instrument, monitor, and fix

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