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Functional requirements: - Internal users are Headquarters and remote office - Internal user do DNS resolution on 2 0 2 . 2 2 . 1

Functional requirements:
- Internal users are Headquarters and remote office
- Internal user do DNS resolution on 202.22.1.3 and can access corporate web and internal mail.
- Email between Internal and Internet transit via Email relay for virus scan.
- The internal DNS resolve to ISP DNS for unknown zones.
- External web, relay email handles all Internet user access including DNS resolve.
- All internal users can access web on 80/443
- A "Bad guy" is 12.55.55.55- prevent any access
- All firewalls are statefull, return traffic inspection is not required.
How many rule sets should be developed?
1?2?4?6?8?10?12?300.5? more?
Please write all necessary rules and answer how many rule sets should be developed! :)
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