Considering the increasing development of the intrusions especially through the internet, and considering the importance of the data security and the necessity of providing proper services on these networks, it is increasingly important to know such intrusions. But it is very difficult to have a precise and complete vision about these intrusions and there is no agreed classification of them. Indeed, each researcher tries to classify the intrusions on basis of his/ her own under-study specification. This study intends to introduce the primary concepts of the networks and the intrusions and threats that disrupt the network security. After the introduction of the primary concepts, we will analyze the security of the computer networks and wireless networks. Then we will explain the firewalls that are important ways of improving the networks security. Finally we will provide some suggestions to increase the safety factor of the networks and to reduce the intrusions.
کلید واژگان :Network Security, Wireless Networks, Firewall
ارزش ریالی : 300000 ریال
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