| dc.description.abstract | Disruption from service caused by Denial of Service (DoS) attacks is an increasing
phenomenon in the internet today. DoS attacks are a virulent, relatively new type of
attack on the availability of Internet services and resources. DoS attackers infiltrate
large numbers of computers by exploiting software vulnerabilities, to set up attack
networks. These unwitting computers are then invoked to wage a coordinated, largescale
attack against one or more victim systems resulting in a Distributed Denial of
Service attack (DDoS). These attacks are mainly directed to Internet Service
Providers (ISPs) that lack the incentive, expertise, and financial zeal to defend
against them. This thesis explores DoS attacks in Kenyan based ISPs and discusses
the means by which these DoS attacks could be mitigated using Snort, an Open
Source Network Intrusion Detection System (NIDS). Based on the understanding of
DoS attacks on ISPs in Kenya, we propose a solution to detect, prevent and react to
DoS attacks. | en |
