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TechKnowSurge Catalog Interactives Traditional or Software-Defined?
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Traditional or Software-Defined?

Logging in to each core switch to add the same ACL, or entering it once at a controller? Spanning tree blocking six links, or every link carrying traffic? Sort each by the network it belongs to.

⚑ Complete this interactive to capture a CTF flag worth 5 points.

About this interactive

A traditional three-tier network is robust, but it is managed one device at a time. To add an ACL you log in to each layer 3 switch that might carry the traffic, failover pair included, and every place you configure by hand is a place for the copies to drift apart. Spanning tree stops loops by electing a root bridge and switching off the redundant links, so those links sit idle. Each WAN router is configured on its own, whatever its links are doing. Software-defined networking adds a software abstraction layer, virtualizing network management. A controller manages the big picture: you enter the behaviour you want once, and the controller and the software on the devices work out how to implement it on each one. The ACL goes everywhere it needs to, the same everywhere. Paths are worked out dynamically, so links that spanning tree would have blocked can carry traffic. And SD-WAN does the same for the WAN, steering traffic around links that are slow, unstable or full of jitter. SDN does not remove the need for audits, but it removes most of the box-by-box work.

What you'll learn

Aligned to

CompTIA Security+
3.1 Compare and contrast security implications of different architecture models.
3.2 Given a scenario, apply security principles to secure enterprise infrastructure.

Key terms

Software-defined Network
SDN
A network architecture that decouples the control plane from the data plane, enabling centralized, programmable network management through software controllers rather than individual device configuration. SDN allows network behavior to be dynamically adjusted through software, simplifying management and enabling rapid provisioning.
Software-Defined WAN
SD-WAN
A virtualized approach to managing wide area network connections using software-defined networking principles.
SDN Controller
A centralized software component in an SDN architecture that manages network device configuration and determines traffic flow across the network.
Spanning Tree Protocol
STP
A network protocol that prevents loops in Ethernet networks by creating a loop-free logical topology.
Access Control List
ACL
A set of rules that defines which users or systems are granted or denied access to a resource.

Topics

Software Defined Network Software Defined Wan Sdn Controller Spanning Tree Protocol Interactive Streak Sort

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