Computer and Network Security

Do you want to know about the computer and network security?

The process of placing preventive measures and detecting unauthorized access to the use of a computer system on the network is computer security. The preventive steps are taken in order to halt any persons that may try to gain access to the computer system. Whereas, the detection process is to assist the user to determine whether or not someone attempted to gain access to the system. As the Internet is used virtually for every transaction from online banking to e-commerce and for e-learning, data security within the network should be the primary objective to safeguard for any user.

Information regarding network security and tips to ensure network security for your PC are discussed in the following points.

  • Network Security types

  • Ensuring network security

  • Tips to ensure that the network is always protected


Network Security types


Network security risks are as a result of misuse of the computer system by intruders through the internet or LAN or WLAN. Some of the network securities issued is remote access without the knowledge of the user by a hacker on a different location. This is made possible by Trojan horse programs, which are back door access applications allowing access to the system by hackers. Another form of network security is the Denial of Service (DOS) whereby the computer continually process data in a looping manner and eventually crashes. E-mail spoofing is increasingly becoming the most common network security issue where by an e-mail message seems to have originated from a particular source when, in essence, it has been sent from a different location. The purpose is to make the user divulge sensitive information as passwords, social security number or credit card numbers.

Ensuring network security


Using a virus program and constantly updating the program helps in detecting common malicious programs i.e. viruses and worms. Additional tools like antispyware and Trojan blockers help in detecting and removing spywares and adware that slip past the anti-virus. In addition to these two programs, the user needs to install firewall programs. Firewalls are important in that they function in filtering traffic into and out of the network. They are able to block certain packets from being transmitted if they contain sensitive user information. In addition they function in managing the user access into the system. Unauthorized access will be blocked instantly.
Tips to ensure that the network is always protected

The user can come up with a well documented policy that will always ensure network is protected at all times even in the absence of the network administrator. Where there is more than one user, each user can be given different privileges i.e. to install program and access level in the system. In addition to this the administrator can also disable ActiveX® controls and JavaScriptTM and e-mail scripts in e-mails.
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