Glossary
SPAN Port
A SPAN port copies traffic from switch ports to a monitoring port - like listening in on network conversations.
What is SPAN Port?
Switch feature that mirrors traffic from one or more ports to a monitoring port for analysis.
Why Should You Care?
SPAN ports enable traffic analysis without additional hardware, though they can miss traffic under heavy load.
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Real-World Example
A SPAN port feeds IDS sensors with mirrored traffic from critical server VLANs.
How to Protect Against SPAN Port
- 1.
Configure SPAN for critical traffic monitoring
- 2.
Consider TAPs for complete capture requirements
Related Terms
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