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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
Reverse Address Resolution Protocol is used to get a layer 3 address if the MAC address is called which then facilitates the loading of the O/S.
Can you define the architecture of TCP IP Protocol?
Virtual Private Network (VPN) adds the features of both public and private networks. It is fixed to single organization and needs public network for connectivity. These connect
what is variable ip address
Question 1 Explain the following with respect to Data Encoding Digital Signaling of Digital Data Digital Signal Encoding Techniques Questi
Determine the definition of HDLC HDLC has only one address field. In a LAN, any station may transmit to any other station. The receiving station needs to see its own address in
Q. How to connect Remote LANs? - Remote bridges acting as connecting devices to connect LANs and point-to-point networks such as leased telephone lines or ADSL lines
If the amount of the application runs on the Client side, then it is Fat clients. It is mostly used for decision support and personal software. If the amount of the application
802.11a OFDM a) Orthogonal frequency-division multiplexing utilizing a 5-GHz band b) Same as FDM except all sub bands are used by only one source at a given time c) Secu
There are two logical addressing :- a) Datalink is physical (hardware) addressing. b) Network is logical (software) addressing.
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