Network intrusion detection aims at distinguishing the attacks on the Internet from normal
use of the Internet. It is an indispensable part of the information security system. Due to the …

We present POSEIDON, a new anomaly-based network intrusion detection system.
POSEIDON is payload-based, and has a two-tier architecture: the first stage consists of a self …

Detecting multiple and various network intrusions is essential to maintain the reliability of
network services. The problem of network intrusion detection can be regarded as a pattern …

Bilgisayar ve internetin, günlük yaşamın vazgeçilmez bir unsuru haline gelmesi ile birlikte
internet sitelerinin ve web tabanlı uygulamaların sayısı da hızla artmıştır. Bilgi, fikir, para gibi …

In changing and constantly evolving information age, together with the developments in
computer and internet technology, the production, digitization, storage and sharing of …

Intrusion detection on the Internet is a heated research field in computer science, where
much work has been done during the past two decades. In this paper, we build a network …

Network security tests should be periodically conducted to detect vulnerabilities before they
are exploited. However, analysis of testing results is resource intensive with many data and …

Anomaly-based network intrusion detection systems (NIDSs) can take into consideration
packet headers, the payload, or a combination of both. We argue that payload-based …

Information system security must battle regularly with new threats that jeopardize the
protection of those systems. Security tests have to be run periodically not only to identify …

Network vulnerability assessments collect large amounts of data to be further analyzed by
security experts. Data mining and, particularly, unsupervised learning can help experts …