An Intrusion Detection System (IDS) makes use of a hardware and software combination that evaluates network traffic. The software evaluates and checks traffic patterns and activities that are considered to be malicious.
Sophisticated intrusion detection system components can cut off a connection automatically and send alerts to administration the very moment that it finds suspicious activity.
An IDS is used mainly by companies that want to find various types of suspicious behavior, mostly on the Internet, that can put their networks and computers at severe risk. It can find any type of attack on a network in addition to unwanted logins and access to important information. IDS works by finding a possible security breach, tracking the information, and sending out alerts in a passive system.
However, in a reactive system, the IDS answers unknown activities by logging off users or reconfiguring the firewall to block traffic from the suspicious source.
Intrusion detection activities belong to certain categories. Anomaly IDS include systems that find irregular traffic and behavior. Misuse IDS looks for behavior on the Internet that fits a certain attack scenario. Another kind of IDS is the network-based detection system, which monitors data packets on the network and looks for suspicious activity.
This type of system can monitor numerous computers on a network at once, which distinguishes them apart from other kinds of IDS, which can typically monitor one computer at once.
There are certain types of people who break into the networks of companies. It may surprise you to know that a company’s database may be more at risk when its security is put in the hands of employees than in those of hackers.
There is a great deal of competition within corporate America and competitors will pay a lot of money if they can find critical data. Also, many employees move from one job to the next or arrange their own ventures. If they can get some valuable information for free, it will be for their benefit and none for the company. The simplest way for an insider to break into a system is to acquire access to a system.
Also, any employee who tries to break into a computer may already know plenty about computers and be able to hack into computers very well. All he has to do is use the common tricks of the hacking industry to gain entry into any network.
Finally, well-trained hackers who work from a remote location can also enter a company’s network. These remote hacking techniques are hard to detect and complicated to overcome.
Paul De Vizard is a freelance writer who enjoys writing about all things technical. This includes Network Monitoring Tools that provide Application Performance Monitoring for large corporations.