What are the disadvantages of using a WIDS?
What will be an ideal response?
Although WIDS were highly intelligent devices, they had significant disadvantages:
* Only issue alert-Because a WIDS only identifies that an attack has started, it does nothing to prevent the attack from occurring.That would be left up to the system administrator after receiving the WIDS notification.
* Alert after attack started-A WIDS only knows that an attack has started after the attack has commenced. By then damage may have already occurred.
* Dependent upon signatures-A signature detection WIDS relies entirely upon the database of known attack signatures in order to recognize an attack. If a new attack is launched for which this is no attack signature or if the database is not constantly updated, a signature detection WIDS provides no protection.
* High number of false positives-Because of the analytic nature of anomaly detection WIDS, a large number of attack alerts are issued that turn out to be false positives.This creates a tremendous burden on security administrators, especially for WLANs.
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