Are firewalls needed?

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Tags

1. #protected
2. #computer
3. #security
4. #because
5. #hardware
6. #connects
7. #firewall
8. #probably
9. #using
10. #already
11. #router
12. #essentially
13. #built
14. #types
15. #there
16. #firewalls
17. #internet
18. #software