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Firewalls
After several security related internet newsgroups started overflowing with posts it becomes clear something hand to done to help secure networks. The first firewalls were implemented in routers between different segment s of the network. These firewalls were basically ACLs in routers.
Slowly firewall technology started to evolve. Early firewall technology known as packet filtering was not enough to stop the constant attacks. The firewall had to more intelligent and understand the different protocols.
Q. Show Upper Layers of tcp-ip model? The Session Layer - The Session layer allows two parties to hold ongoing communications called a session across a network. - Not
Determine the Objectives of computer security Though computerisation helps a lot in proper organisation of experience, it also opens a Pandora's Box simultaneously. On one
What is ICMP? ICMP is Internet Control Message Protocol. It gives messaging and communication for protocols within the TCP/IP stacks. This is also the protocol that manages err
Qustion: Convert the binary number 10111100 to hexadecimal.
Torus: The mesh network with wrap around connections is termed as Tours Network. Figure: Torus network
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what is man LAN wan
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NICs AND NETWORK HARDWARE: NIC is create for one kind of physical network. For example Ethernet interface may not be needed with token ring and similar ATM interface cannot b
Gateway A device linked to multiple physical TCP/IP networks capable of routing or delivering IP packets among them. Router It's a layer 3 device that connects 2 diss
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