Network Simulator open Source
Network simulator open source is name as the series of discrete event network simulators. The ns-1, ns-2 and ns-3 are some of the Ns simulator specifications where all of them are discrete-event network simulator. In the research and teaching are the primary usage of Network simulator open source. Ns-3 is free software which is available publicly under the GNU GPLv2 license for research, development, and used in Network simulator open source.
The creation of an Network simulator open source environment for networking research is the main goal of the ns-3 project that will be prefer inside the research community:
- Network simulator open source should be align the needs of modern networking research with the simulation.
- Network-simulator open source should encourage peer review, community contribution, and validation of the software.
Ns-3 project
Since a sufficient number of high-quality validate, test and actively maintain is contain in the network simulator creation process. A lot of works are require to maintain these models. This workload over a large community of users and developers are spread by ns-3 project which is used in simulator open source.
Simulation
The operations of a real-world process or system are imitate by the simulation over time. In The act of simulating something first requires that a model be developed. The key characteristics or behaviors/functions of the selected physical or process or abstract system are represent by this type of model. The system itself only is represent by this model. In The operation of the system over time is represent by the simulation.
The systems engineering, electrical engineering and applied mathematics the area which uses signal processing. An analyses of analog as well as digitized signals are deal with an operation. The time-varying or spatially varying physical quantities are represent by these operations. An electromagnetic radiation, sound, images, and sensor readings represents the signals of interest. For example biological measurements such as electrocardiograms, control system signals, telecommunication transmission signals, and many others.
The packet forwarding (the transit of logically address network packets from their source toward their ultimate destination) through intermediate nodes are direct by routing in packet switching networks. Typically, Intermediate nodes are network hardware devices such as bridges, routers, firewalls, gateways, or switches. General-purpose computers can also forward packets and perform routing. Though may suffer from limited performance and they are not specialize hardware.
Usually, the routing process directs packet forwarding on the basis of routing tables which maintain a record of the routes to various network destinations. Thus the router’s memory holds the construction of routing table. For efficient routing the routing table is very important in Network simulator open source. Mostly, only one network path is used by routing algorithms at a time. The use of multiple alternative paths is also enable by multipath routing techniques.
Cryptography
In Network open-source uses the cryptography technique. A key-agreement protocol is a protocol which is also use in cryptography also on open source. The two or more parties can also agree on a key in such a way that both influence the outcome. This also precludes undesire third-parties from forcing a key choice on the agreeing parties when properly done. In practice protocols are useful that what key has been agree also upon and also do not reveal to any eavesdropping party.
SSL
The Secure Sockets Layer is also short of SSL (pronounce as separate letters). Via the Internet a protocol develop by also Netscape for transmitting private documents in Network open source. A cryptographic system use in SSL uses two different keys which are also use to encrypt data. A public key is known to everyone and a private or secret key is known only to the recipient of the message.