Computer Networking And Management

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Jared W


Date added:

July 24, 2014








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28 / 7643


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The most common boundary in firewall is between a trusted and an un-trusted network. A perfect and secure firewall would not interfere with users’ activities or any transfers between authorized networks. Network firewalls mainly operate in different layers of the OSI model. The lowest layer in which the firewall operates is in the network layer...
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The lowest layer in which the firewall operates is in the network layer. In this layer the internet protocol for TCP/IP will determine if the packet is from a trusted source. Special privileges cannot be assigned to grant access or deny in this layer. Firewall which works at the highest layer of OSI layer is on Application layer, where granting access is more easy because at application layer a large collection of information including the source and packet contents will be known...
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