Minimum firewall costs
Hardware ($10K@3yr)
Software ($10K@3yr)
Maintenance ($4K/yr)
Testing ($10K/yr)
Audit ($10K/yr)
Operation ($40K/yr)
Upgrades ($2K/yr)
Management ($10K/yr)
Response ($10K/yr)
Downtime (?)
TOTAL = 92K/yr
As more firewall functions are added
complexity and operating costs go up
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