A firewall may be implemented in
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A firewall is software used to maintain the security of a private network. Firewalls block unauthorized access to or from private networks and are often employed to prevent unauthorized Web users or illicit software from gaining access to private networks connected to the Internet. A firewall may be implemented using hardware, software, or a combination of both.
A firewall is recognized as the first line of defense in securing sensitive information. For better safety, the data can be encrypted.
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