Network Security Defined

Network Security Defined

Computers have become an integral part of our lives. They can help us complete our work and play programs that have not been updated for many years. They can even be the key to unlocking hidden data and can become the cause of a lot of troubles if they are abused and misused.

The network is responsible for transmitting information and data across the computer. In order to protect their business and people from other factors like viruses, intruders and theft, network systems must be secure and protected. It should be possible to connect any one to any network without the need for passwords or authorization. It must be possible to send and receive data easily and quickly.

Computers and Networks

The computer is the major component that makes up a network. The computers communicate with other computers and wireless devices to accomplish their tasks. They do this through physical connections such as in a LAN or the Internet. More than just simple machines, computers work in large organizations and companies that use them to communicate and make decisions.

The ability to monitor the computer’s performance can help with tracking down and eliminating security threats and obtaining the necessary data and information for a safe network environment. This helps to increase productivity while decreasing costs associated with time spent on security issues.

The computers need protection and encryption to safeguard sensitive information. Network Security can be quite complex, but it is essential to keep it safe and secure. The Internet security that is being offered by Cisco can be a major help to companies that have multiple networks and several computers that need to be protected.

The core security system is actually a number of networks that perform multiple functions. The security that each network is offered depends on the type of network that it protects. The types of security include:

  • Antivirus and Antimalware Software
  • Application Security
  • Behavioral Analytics
  • DLP
  • Email Security
  • Endpoint Security
  • Firewalls
  • IDS and IPS

Network Address Translation (NAT)

The Network Address Translation (NAT) system is used by all computer networks to provide security, access and multiple networks that can provide different data from each other. The NAT system is used to permit a single computer to communicate with many other computers in the network without altering the message on the source and destination end of the communication. The routers in the network can be as basic as a TCP/IP router or more complex and include switches, firewalls and link aggregation. Any time one computer wants to access another it will use the main router to translate the data to the appropriate network that it needs.

The primary purpose of a router is to translate the IP addresses to the port numbers that the destination computer wants to be accessed. The router keeps track of all the individual computers on its network. If a person uses a certain computer, the router keeps track of which router owns the IP address.

When there is a conflict between two computers on the same network, it can cause the routing of traffic and information from one computer to another. The routing of traffic provides the network with reliability, thus, enabling it to carry on with more important tasks. It can be used to hide behind a firewall for private files and user security needs.

Other applications can be used to communicate and coordinate between computers that use the Internet and local area networks, including those within a company. Cisco Network-to-Network (NAT-PNP) technology allows local area networks to communicate with larger networks without any password. Cisco has successfully tested the product to deliver successful information transfer on the Internet.

With the expansion of computers and the networks, the importance of security and network security has become crucial to protect computers and data. With all the programs that operate on computers the importance of computers to businesses and industries has continued to grow. Protecting computers systems has become a major business and technological challenge.