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Firewalls
Firewalls emerged as a new technology in 1990s but its idea was present near two decades back. Historical context of "Firewall" is quite literal. It was in use to describe a barrier that separates a portion of a building dealing with fire, like a stove or a kitchen, from the rest of the structure. Later firewall found its use in connection with steam engines. It was described as a wall which separates an engine fire from passenger cars. Firewall ideas were greatly matured when Jeff Mogul from Digital Equipment Corporation published his papers in 1988 . His work described various processes that could be used to make networks secure. It was Marcus Ranum of AT&T Bell Laboratories who proposed the design of firewall and its components. He also coined the term "Firewall" for this quickly maturing technology. His work got much attention in 1990 and firewalls gained commercial popularity
Layered Architecture The best way to understand any complex system is to break it into pieces and then analyze what they do and how they interact. The most logical app
IGP= Interior gateway routing protocol and EIGRP= Enhanced Interior Gateway routing protocol IGP = use in one Autonomous and EIGRP = use with many autonomous
Firewall The NAT router allows receiving of number of a data streams. If it receives a transmission in the form of acknowledgement or data streams or error responses from an ex
Time out The protocols name Go Back N is derived from the sender behaviour in the presence of lost or overly delayed packets. A timer will again be used to recover
Enumerate about the Traffic policing Traffic policing happens when a flow of data is regulated so that cells (or frames or packets) that exceed a performance level are discarde
Recognize the command to view the configuration-register value Ans) show version is the command to view the configuration-register value
what is due care
Q. What is Data traffic? Data traffic Peak data rate : max data rate of the traffic Average data rate = (amount of data)/time Maximum Burst size: max. l
different components of computer network security
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