Approach of Data Security in Local Network Using Distributed Firewalls

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Executive Summary

Firewall is a device or set of instruments designed to permit or deny network transmissions based upon a set of rules and regulation is frequently used to protect networks from unauthorized access while permitting legitimate communications to pass or during the sensitive data transmission. Distributed firewalls allow enforcement of security policies on a network without restricting its topology on an inside or outside point of view. Use of a policy language and centralized delegating its semantics to all members of the networks domain support application of firewall technology for organizations, which network devices communicate over insecure channels and still allow a logical separation of hosts in- and outside the trusted domain.

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