Sarah Sadie

Sarah is the author of Elite Home Ideas and the founder of ebizz.co.uk. She has worked with authors for a decade to help them build their platforms, connect with readers, and sell more guest posts.

Firewall

What is a Firewall?

A firewall is usually a generic network security device that manages and controls outgoing and incoming network traffic according to predefined security criteria. A firewall normally establishes a barrier between an untrusted remote network and a trusted local network, like the Internet. Firewalls prevent unauthorized access by controlling the communication between two or more networks….

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