IT Baseline Protection Manual - The Information Warfare Site

Threats Catalogue Deliberate Acts Remarks
____________________________________________________________________ .........................................
T 5.28 Denial of services
Such an attack aims to prevent IT users from using functions or devices which
are normally available to them. This attack often takes place in connection
with distributed resources, with the attacker using these resources to such a
degree that other users are prevented from carrying out their work. Shortage of
the following resources can intentionally take place: processes, CPU time,
disk space, inodes, directories.
This can be carried out, for example, by:
- starting any number of programs simultaneously,
- starting numerous programs at the same time which use a lot of CPU time,
- occupation of all free inodes within a UNIX system so that no new files
can be created,
- creation of a large number of small files in a directory on a DOS PC so that
no new files can be created inside this directory,
- deliberately overloading the network,
- cutting off network connections.
____________________________________________________________________ .........................................
IT-Baseline Protection Manual: Oktober 2000