An intrusion-detection system (IDS) is a software-based tool used to detect for crackers or other security breaches such as incoming shellcodes, viruses or trojan horses in a computer system or network.
Two main types of intrustion detection system exists:
... to the outside of the body. The urethra has an excretory function in both sexes, to pass urine to the outside, and also a reproductive function in the male, as a passage ...