Network means being connected to each other. In IT, a network is a group of two or more computers (nodes) that are connected to each other through communication paths. These communication paths can be wireless or wired. Users can share data, files and devices through the network. Communication cannot occur without network. Network security is a process by which a network is protected from unauthorized access (access without permission), hacking and denial of service (Dos) attacks, viruses, worms etc. Network security is not implemented by everyone, it requires an expert. To increase network security in a network, we should monitor the network and use software and hardware components. Such as firewall, antivirus software, IDS etc.
Network security
Now that the network is ready, the question comes about the security of this network, i.e. how to keep the network secure. Network security means protecting a network from unauthorized access, misuse and risk. Under this, all those rules and measures are followed so that the network can be kept safe. The security of any network is ensured according to its size, like if it is a small size network then it will require Basic Network Security, whereas if it is a big business then it will require Basic Network Security. what is network security, various hardware and software solutions are used, so that intrusions and threat attacks in the network can be prevented. A high network security includes measures like access control, antivirus software, application security, network monitoring, firewall, encryption and data loss prevention.
Goals of network security
Confidentiality: – Confidentiality means that only the sender and the receiver can see or access the message. Confidentiality ends when an unauthorized person accesses the message.
Authentication: – Authentication means authenticating the identity of the user. That is, to ensure that the person sending the message is the same person and not someone else.
Integrity: – Integrity means that there is no modification in the message. Integrity remains intact as long as there is no change in the message.
After the sender has sent the message, if any change is made in the message like: – alter, insert, delete etc. then its integrity is lost.
Non-repudiation: – Sometimes such a situation arises when a user sends a message but later says that he has not sent this message. So non-repudiation does not consider any such possibilities. That is, non-repudiation does not allow the sender to refuse the message after sending it.
Access control: – Access control ensures which user can access what and what he cannot access.
What is the need for Network Security?
In today’s time, every small and big business is cyber based, where Internet, LAN and other network methods are being used, in such a situation, there is a need to protect against cyber threats, maintain operations smoothly and protect important data. It is necessary to have network security. Only by following this, any type of cybercrime happening in the network like Hacking, Virus, Data Loss, Data Modification, Identity Theft, DDOS Attack etc. is prevented, and the user is provided a safe platform to work.
Types Of Network Security
Some types of network securities are given below –
Access control
Not every individual should have full allowance of access to the network or its data. One way to check this is to go through the details of each personnel. This is done through network access control. Which ensures that, only a handful of authorized employees are able to work with the permitted number of resources.
Antivirus And Anti-Malware Software
This type of network security ensures that no malicious software enters the network and jeopardizes the security of the data. Malicious software like viruses, trojans, worms are controlled by the same. This ensures that not only is the entry of the malware safe but also that the system is well equipped to fight it once it enters.
Cloud Security
Now a days a lot of organizations are joining hands with cloud technology. Where large amounts of important data are stored on the Internet. It is malicious that may be related to some unauthorized dealers. This data must be protected, ensuring that this security is not jeopardized at all. Many businesses embrace SaaS applications to allow some of their employees to access data stored on the cloud.
Conclusion
Refers to the measures taken by any enterprise or organization to keep its computer networks and data secure, using both hardware and software systems. Its purpose is to secure the privacy and access of data and networks. Every company or organization that handles large amounts of data has a degree of resolution to the many cyber threats it faces. The most basic example of is password protection. Where the user of the network chooses himself. In recent times, network security has become a central topic of cyber security. In which many organizations are inviting applications from people who have skills in this field.
