by on May 22, 2018

what is a firewall in computer network security

a firewall is a network security that looks at incoming and outgoing network traffic and prevents unauthorized access to maintain information security.

Within a computer system, there are internal networks and external networks such as the internet. The internal system is always trusted because only the user has access to this network. However, the internet can be malicious and be infected several types of malware and cyber hacking code.

Therefore, firewall technology features diverse types of methods to combat this. And the method for intrusion prevention used depends on the type of firewall in effect.

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