Module 5
Direction and State
Three labs where the rule is right and something about how it was applied is not - the wrong interface, the wrong direction, or a reply that the firewall never expected.
3 activities~60 min
In this module
- Apply a filter in the correct direction on the correct interface
- Permit return traffic without permitting new inbound connections
- Explain how asymmetric routing defeats a stateful firewall
Activities
Lab
Egress filter on the wrong interface
The right rule, permitting the wrong department.
20 min
Lab
Stateful return traffic
Replies allowed back without opening the door inward.
20 min
Lab
The firewall that never saw the request
Replies dropped by a firewall with no record of the connection they belong to.
20 min
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Curriculum topics
Each topic page lists every lesson, quiz and hands-on lab that covers it, plus how it maps onto the CCNA and Network+ blueprints.