Introduction to Mastering MikroTik

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Mastering Basics – Week 2

Week 2 Guide to Firewall

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Explain what the MikroTik “Firewall” is (and what parts it includes).

Describe packet flow in RouterOS: input / forward / output.

Use connection tracking states (new/established/related/invalid/untracked) in rule logic.

Know what each firewall facility is for: Filter, NAT, Mangle, Raw, Address Lists, Layer7, plus how FastTrack / NoTrack impact behavior.

Understand why MikroTik differs from many dedicated firewalls (default allow vs default deny) and why rule order + Safe Mode matters.