Network and Infrastructure Security
Firewalls, segmentation, ZTNA
Network and Infrastructure Security protects the systems, hardware, and traffic that everything else runs on. It spans firewalls, segmentation, secure protocols, and monitoring to keep data moving safely and intruders out.
Why Network and Infrastructure Security matters
Blocks lateral movement
Segmentation and ZTNA contain an intruder to one corner instead of the whole network.
Protects data in transit
Strong protocols keep traffic confidential and tamper-proof as it crosses the wire.
Keeps services up
Resilient infrastructure resists DDoS and outages, protecting availability.
What you'll practice
Quizzes and spaced repetition keep these sharp, reinforcement not a replacement for deep study.
- Recall the OSI layers and where controls live
- Recognize secure vs. legacy protocols on sight
- Tell segmentation, ZTNA, and SDP apart
- Keep firewall and IDS/IPS roles straight
- Spot weak points in network monitoring
Topics covered
Network securityCloud securityIoT securityWireless securityPhysical securityContainer security (e.g., Docker, Kubernetes)Endpoint securityNetwork SegmentationZero Trust Network Access (ZTNA)Software-Defined Networking (SDN)Network Monitoring and Traffic AnalysisVirtualization SecuritySoftware-Defined Perimeter (SDP)
A peek at the format
PreviewMultiple Choice
What is the main purpose of network segmentation?
ATo speed up internet access
BTo limit how far an attacker can move once inside
CTo reduce electricity usage
DTo replace firewalls entirely
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Play for realRelated certifications
- Cisco CCNP Security
- CompTIA Network+
- GIAC GCIA
- Fortinet NSE 4