Firewalls represent the technological gateways into and out of companies, as well as serving to compartmentalize internal systems and networks to segregate them from one another.
Network traffic flowing through, or blocked by, firewalls does so based upon specific permissions intended to secure systems, services and users from unauthorized access or malicious threats.
A properly maintained firewall is one of the keys to business and operational success.
from https://is.gd/DwBX47
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