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Firewall

A firewall is either hardware or software that acts like a filter or gatekeeper to stop unauthori...

A firewall is either hardware or software that acts like a filter or gatekeeper to stop unauthorized users from accessing a firm’s internal or sensitive data or applications. Computer firewalls achieve this segregation by preventing direct connection to the computers inside the firewalls by those outside of it. All requested information or services are ‘relayed’ through the firewall instead of being delivered direct to the user.

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