Network Security | Defense in Depth There are many aspects to the security of a system, but the Defence in Depth strategy guides them all.
There is no one thing that provides full security for a system. All too often people think they’re secure, as they have a firewall. Unfortunately that’s not true. Firewalls are important, but they’re not where security begins and ends.
Cyber Security needs to be layered. Consider an example of a virus being sent through email. Will the firewall pick it up? Possibly not. We rely on email security systems, and antivirus software on the workstations. If one part of this fails, there’s still another part to rely on.
Interested in learning about networking? Let Network Direction help you get started.
This series is for people that are first starting out in networking. All you need to bring is interest and enthusiasm.
My goal of the network Fundamental Series is to help anyone wanting to get into the IT field learn more about Networking.
We will introduce you to the terminology used in the field and help you understand what it means. For instance, have you heard of protocols? We’re going to see what these are, and use the #Ethernet protocol as an example.
#VxLAN is a network overlay technology commonly used in the cloud. It is vendor independent so it can run on #Cisco #Nexus, NSX, Open vSwitch, and many more. It can even be used in virtual appliances like the CSR1000v.
VxLAN is a sophisticated way to manage layer-2 networks. It’s like VLAN, with some very special enhancements.
It has a different perspective on the network. There is the underlay fabric, which uses routing such as eigrp or ospf, and the overlay, where the virtual networks live.
LAN segments are called VNI’s. VNI’s keep traffic separate, Just like VLANs. This is part of how VxLAN is used for multitenancy.
Traffic within a VNI reaches a switch with a special interface called a VTEP. The traffic is encapsulated and forwarded over the routed network through a tunnel.
This training series is VxLAN fundamentals explained. Think of it as VxLAN for dummies!
Part 1: Fundamentals - An introduction or primer into the basic concepts and terminology. For example, VxLAN vs VLAN, and host vs gateway
Part 2: Header Format - Follow the packet flow to see the headers added to a frame
Part 3: Spine Leaf Topology - Looks at the hierarchical architecture, and compares it to the newer spine leaf topology
Part 4: Address Learning - BUM traffic, data plane or control plane learning, multicast, and ingress replication
Part 5: Bridging Configuration - A technical deep dive into flood-and-learn (bridging) and multicast configuration on Cisco Nexus 9000 switches
Part 6: BGP EVPN Configuration - A technical deep dive into control plane learning (BGP EVPN) and Ingress replication configuration on Cisco Nexus 9000 switches
These videos is also helpful in CCNA Data Center, CCNP Data Center, and CCIE Data Center. 200-155, DCICT 300-180, DCIT 300-160, DCID 300-165, DCII
Have you wondered how #vPC works? This series is for you
vPC is a way of adding layer-2 resiliency to the data centre.
These videos explain vPC, by examining the role of the peer-link and keep-alive link, the way traffic flows, and vPC failure scenarios. And, we follow up by looking at configuration and routing concerns.
Whether you're a network engineer or looking for fundamentals, this video will help you.
Also useful for CCNA Data Center, CCNP Data Center, and CCIE #DataCenter