Alarms and notifications are generated by IDSs to inform users when attacks are detected. The
most common form of alarm is:

A.
Onscreen alert

B.
Email

C.
Pager

D.
Icq

Explanation:
Alarms and notifications are generated by IDSs to inform users when attacks are
detected. Most commercial IDSs allow users a great deal of latitude in determining how
and when alarms are generated and to whom they are displayed.
The most common form of alarm is an onscreen alert or popup window. This is displayed
on the IDS console or on other systems as specified by the user during the
configuration of the IDS. The information provided in the alarm message varies widely,
ranging from a notification that an intrusion has taken place to extremely detailed
messages outlining the IP addresses of the source and target of the attack, the
specific attack tool used to gain access, and the outcome of the attack. Another set of
options that are of utility to large or distributed organizations are those involving
remote notification of alarms or alerts. These allow organizations to configure the IDS
so that it sends alerts to cellular phones and pagers carried by incident response
teams or system security personnel.