Thor's FREE IT and Cybersecurity Glossary!

orange-underline-thorteaches-cissp-cism-cc-ccsp-security-training

Use my glossary to help in your CISSP, CISM, CC, Cybersecurity certification studying.

Port security

Port security: A set of rules and parameters applied on a network switch port to secure the network by controlling who can connect to it and limiting the number of MAC addresses allowed on a single port. This feature can prevent unauthorized access by disabling the port or sending an alert if an unexpected device is detected. It helps protect the network from threats like MAC flooding, which can lead to a denial of service.

« Back to Glossary Index

Start studying today!

  • 34 hours of CISSP videos
  • 5,000+ CISSP questions
  • A 300-page CISSP study guide
  • 120-page quick sheets
  • CISSP Mnemonics
  • A CISSP study plan
  • A 2,500-page CISSP Glossary
  • The 24/7 CISSP ThorBot (chatbot)
  • 2,500 CISSP Flashcards
  • Subtitles English, Spanish (Latin America), Portuguese (Brazil), French, Arabic, Chinese, Japanese, and Hindi
  • Lifetime or 12-months access
  • 32 hours of CISM videos
  • 900 CISM questions
  • A 200-page CISM study guide
  • CISM Mnemonics
  • A CISM study plan
  • A 2,500-page CISM Glossary
  • The 24/7 CISM ThorBot (chatbot)
  • 2,500 CISM Flashcards
  • Subtitles English, Spanish (Latin America), Portuguese (Brazil), French, Arabic, Chinese, Japanese, and Hindi
  • Lifetime or 12-months access
  • 17 hours of CC videos
  • 1,700+ CC questions
  • A 120-page CC study guide
  • CC Mnemonics
  • A CC study plan
  • A 2,500-page CC Glossary
  • The 24/7 CC ThorBot (chatbot)
  • 2,500 CC Flashcards
  • Subtitles English, Spanish (Latin America), Portuguese (Brazil), French, Arabic, Chinese, Japanese, and Hindi
  • Lifetime or 12-months access

LIVE!!

Our Upgraded CISSP Flashcards are OUT!

15% off Launch SALE!

  • 2,800+ Flashcards from all 8 CISSP domains
  • Study from anywhere on any device at any time (web, Android, iOS)
  • Learn more in less time with optimized spaced repetitions
  • Focus on your weak areas first with the confidence-based algorithm
  • Do short 10-term sessions or longer ones as they match your schedule
  • Strengthen your long‑term memory using active recall with immediate answer reveal and self‑rating
  • Track your progress instantly - Mastery %, Confidence Gained, and Cards Studied update after each round
  • Keep motivation high - Instant feedback, progress meters, variable rewards, and social leaderboards
  • Stay on schedule with automated study reminders
Brainscape_s CISSP mobile dashboard