Understanding Networking 1 :
This course builds on the basic packet, frame and IP networking concepts of Course V3, Fundamentals of Datacom and Networking, to put in place a solid understanding of protocol stacks, the OSI model and layers and IP addressing including address classes, static vs. dynamic public vs. private and network address translation.
In Part 3, we move to the next higher level of knowledge, understanding packet networks and bandwidth on demand services from telecommunication service providers. After understanding the core concepts, including virtual circuits, we use the grand-daddy of packet services, X.25 to explain jargon: connection-oriented vs. connectionless and reliable vs. unreliable packet networks. Then we progress through technologies: Frame Relay, ATM and finish with MPLS. We’ll trace the flow of TCP and IP packets from server to client across Frame Relay, then see how the same TCP/IP works over MPLS.
IP over MPLS will end up replacing all other services including ISDN, T1s, Frame Relay, native ATM. Understanding the OSI layers, how a protocol stack works and TCP/IP over MPLS is career-enhancing knowledge.
Understanding Networking 2
In this course, we cover the Internet and IP Security.
We’ll start at the beginning of the story, understanding where the Internet came from and its fundamental principles of operation. Then we’ll look at some details and improvements such as the Domain Name System, MIME, HTML and HTTP... which form 'the Web'. We’ll review how you can connect to the Web from a residence and from an enterprise or organization.
In the second part, we’ll make a reasonably comprehensive overview of security in the IP world. We’ll begin with a discussion of risk areas, vulnerabilities and measures. Then we’ll examine several areas: computer security and malicious software like viruses and Trojan Horses and the measures to protect against these risks; network security and firewalls, public key and private key encryption, authentication, IPsec and VPNs.
This video provides you with a real understanding of what the Internet is, how it functions and current issues, plus practical knowledge of computer security, network security and firewalls, encryption, IPsec and VPNs.

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