ABSTRACT
Currently, the occurrence of congestion on the Internet is mainly due to the unpredictable and chaotic nature of traffic flowing through it. Basically, the current congestion control mechanisms can be classified into two groups-the first increases the availability of resources through the dynamic reconfiguration of the same, and the second, the most used, reduces the demand regarding the availability of resources [5]. 7.1.1.2 Network security The Internet is naturally a constantly changing environment, which enables its customers to create and adapt their technology according to their needs and desires. This mutation becomes troublesome in certain cases, as criminal activities become associated as well with the emergence of the Internet. Online crime, and consequently the problem of computer security and networking, is another major concern of the current ISP.Illegal and illicit acts are performed and practiced over the Internet (e.g., distribution, exchange, and sharing of copyrighted material, streaming freely “pay TV channels,” pedophile content exchange, illegal casinos, and illegal gambling).Denial-of-service (DoS) attacks are rising, producing disruptive results for operators and costly network repair and maintenance. Indeed, corporations report currently very high numbers of
unauthorized network access. Indeed, most firewalls require critical patches every year.Given these major concerns on the part of ISPs, it becomes essential to get to know what each user does, that is, the technologies and applications he or she uses. It is also important to determine if the user employs the network to commit criminal acts. It thus becomes clear that algorithms must be created to analyze the network traffic generated by users and create user profiles so that ISPs can implement security and business policies according to the profiles generated. Such work falls within the area of network management in accordance with policies. 7.1.1.3 Security motivation for automatic and intelligent
networksOver the past few years the growth of IP networks (e.g., Internet), coupled with the explosive growth of users on these networks, and the emergence of new applications and services, caused the network traffic to increase in quantity and diversity. Networks become more complex, and thus traffic characterization and monitoring are increasingly important tools for traffic engineering, enabling network operators to have diverse information concerning network usage.
