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Pranay Parab is an independent tech journalist based in Mumbai, India. He covers tech for Lifehacker, and specializes in tutorials and in-depth features. A firewall is an essential security tool for ...

I work in a small, tech-focused company and we have an old Sonicwall firewall that we want to replace (it works fine, it just isn't very full-featured). Aside from just buying a new hardware firewall, ...