Viruses are a piece of computer programmable software, which allows the user to plant the software into the network or computer of their choice. Viruses come in many different shapes and sizes, there are such things as a Trojan and a R.A.T. A Trojan can stay on a computer and cause a nuisance for many several years possibly forever. A R.A.T is a piece of software that if allowed into your system can gain complete control of whatever machine they want.
- Virus protection software is designed to prevent viruses, worms and Trojan horses from getting onto a computer as well as remove any malicious software code that has already infected a computer.
- How is it used?
- It is used by installing an anti-virus software suite onto a computer and it works by scanning the computer daily weekly or monthly it also has background tasks that run secretly without disturbing you and what your doing until a virus or piece of malware attempts to access your computer.
Firewalls
Firewalls are a system designed to prevent anybody trying to access your network without authority. This happens by the Firewall forcing the information accessing your network into a "bottle-neck". Then once it has done this, the Firewall scans the information, when it finds an unauthorized piece of information; it refuses access to that certain piece of information.
- A system designed to prevent unauthorized access to or from a private network. Firewalls can be implemented in both hardware and software, or a combination of both. Firewalls are frequently used to prevent unauthorized Internet users from accessing private networks connected to the Internet, especially intranets.
- How is it used?
- All messages entering or leaving the intranet pass through the firewall, which examines each message and blocks those that do not meet the specified security criteria.
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