Intrusion Detection Systems provide the ability to monitor systems or networks as a means to record or even catch hackers. In many cases, IDS only records and logs intrusion attempts, not actually stops them (although this limitation is disappearing at a rapid rate). However, many newer, more sophisticated IDS systems include features from other security utilities, such as vulnerability scanners and sometimes even basic firewall capabilities.
There are two main types of IDS solutions, host based and network based. A host-based IDS is installed and mainly monitors a system, such as a server, for any ...