What is network security?
Network security is a field of computer sciences that focuses on securing the network and protecting the network from all kinds of malicious activities. A secure network refers to a network in which the admin and users are assigned with an ID and Password and access to the network is only allowed through that particular ID. To enter the network, the approval of the admin or user is extremely necessary otherwise the access will be denied. Various kinds of networks are used in the field of network security and it includes both public and private sector both. Network security is mainly used in cyber security and network engineering projects.
There are some private sector companies that like to keep their security enabled networks private, but usually the network system and security can or cannot be public. The objectives as well as functions of network security are securing, protecting and overseeing the entire computer network. There are various ways through which the security is added on to a network and one of the most easiest and common way is to assign an ID and password to the networks. The most important and basic step of network security is the process of authenticating the network with an ID and password.
Functions of a network security administrator
A network security administrator’s main function is keeping track of the whole network and to take required measures towards the creation of a secure network. Nowadays most of the work places require a computer network and almost all of them need a security enabled network. The network security administrator has to monitor the organization’s networks in order to keep the network secure. Most of the organizations, big or small, require a network security administrator and that is why the network system and security field is full of opportunities.
There are some kind of work places that require an integrated computer network and those are airlines, banks and defense. Such work places need to monitor the system and network very closely and make them dynamic in nature to make the services better. Establishing a secure network and then maintaining it is very important nowadays for most of the organizations and also the need for a network security administrator has increased. Therefore, the opportunities and the scope has increased in terms of career in the field of network system and security.
Different threats faced by a computer network
1. Identity theft – In this type of threat, the particular individual who is posing as a threat to the computer network obtains certain information from the network to benefit himself or herself. This theft is usually related to personal information such as Social security numbers, credit card information, driver license number and so on.
2. Data theft – This type of theft refers to obtaining and copying information from another computer that belongs to a certain organization in an illegal manner to perform malicious tasks. Due to such threats it is very important to have create a secure network.
3. Denial of the service attacks – In this type of threat the computer system is attacked by a large amount of malicious and useless traffic. Teardrop attack and ping of death are some examples of this type of attack.
4. Trojan horses and the Viruses – Trojan horses and Viruses are the most common and have been known as the most malicious programs for a very long time and are known to modify and damage the computer system.
5. Zero day attacks – Such type of attacks are usually potholes in software that are unknown to all including the person who is selling it. This threat is known to have very harmful effects to the computer network.
6. Hackers attack – This type of attack is the most common one and is known by all. It is done on the computer network to gain access to and steal information from it through an unauthorized and illegal manner.
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