Need for Security | Network Security | Cryptography and Network Security
Need for Security | Network Security | Cryptography and Network Security
Need for Security
The network needs security against attackers and hackers. Network Security includes two basic securities. The first is the security of data information i.e. to protect the information from unauthorized access and loss. And the second is computer security i.e. to protect data and to thwart hackers.
The information security is needed for the following given reasons.
1. To protect the secret information users on the net only. No other person should see or access it.
2. To protect the information from unwanted editing, accidently or intentionally by unauthorized users.
3. To protect the information from loss and make it to be delivered to its destination properly.
4. To manage for acknowledgement of message received by any node in order to protect from denial by sender in specific situations. For example let a customer orders to purchase a few shares XYZ to the broader and denies for the order after two days as the rates go down.
5. To restrict a user to send some message to another user with name of a third one. For example a user X for his own interest makes a message containing some favorable instructions and sends it to user Y in such a manner that Y accepts the message as coming from Z, the manager of the organization.
6. To protect the message from unwanted delay in the transmission lines/route in order to deliver it to required destination in time, in case of urgency.
To protect the data from wandering the data packets or information packets in the network for infinitely long time and thus increasing congestion in the line in case destination machine fails to capture it because of some internal faults.
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