How to Secure a Network

 

Computer networks were initially used only by universities and small-sized companies. The primary purpose of computer networks was to improve research facilities at an institution or basic electronic communication like e-mail. It also allowed for the sharing of certain devices within a network, such as printers and fax machines. These networks were not exposed to a lot of network attacks or confidential data theft, so they did not need any extra security measures. Network security has become a vital and important topic for both network administrators and users due to the explosion in the network industry. The average number of consumers has increased from a few hundred to millions and even billions.

To make computer networking more reliable and safer, a variety of protocols and algorithms have been developed. Security of a network requires intelligent design to outsmart dedicated, intelligent and often well-funded opponents.

Our electronic world does not have the luxury of authenticating or identifying people, unlike the real world. It cannot recognize their faces, voices, and handwriting, just like the real one. It is impossible to keep hard copies of pay orders and other similar documents online as proof. This makes it much more difficult to identify and grasp. More sophisticated solutions are required for this purpose.

OSI (Open System Interface), a reference model, has no specific layer that is responsible for protecting networks from outside threats. Each layer provides the appropriate level of security for its purpose and uses, since network security covers a wide range of crimes. The first layer, which is the physical layer, can be used to prevent tampering or security breaches like wiretapping. This layer includes the transmission lines and cables that are enclosed in tubes sealed with high-pressure gas. Sensors can monitor the gas pressure and detect any attempts to drill or break the tubes. An alarm can then be triggered.

To ensure reliability of the communication service, the data link layer that deals with transmission errors uses increasingly complicated protocols. Each frame of data can be decrypted at each end and encrypted on the way Broadcom Panama

The network layer is the lowest layer that allows for end-to-end transmission. Firewalls and other security systems are available to protect the computer against attackers.

Transport layer provides reliable and cost-effective data transportation from the source machine into the destination machine. End-to-end security is therefore crucial. To ensure maximum security, the entire connection must be encrypted.

It can handle user authentication and identification issues. To prevent security breaches, network security cannot be limited to one layer. It must be managed at every level.

Nearly all security, except for physical layer security is based upon cryptographic principles.