Μελέτη προσομοιωτών δικτύου και υλοποίηση περιβάλλοντος για την αποφυγή δικτυακών επιθέσεων
KeywordsΑσφάλεια δικτύου ; Προσομοιωτής δικτύου ; IPsec ; Zone-based πολιτικές ; Λίστες ελέγχου πρόσβασης ; Συστήματα αποτροπής διείσδυσης
This thesis is part of the research field of Network Security and more specifically the use of a Network Simulator for the implementation of an environment for the management of network traffic, the protection of the infrastructure and the prevention of network attacks. The security of computer networks is a critical issue in today's society. Network simulators are a valuable tool for testing network security measures without risking damage to real networks. This paper starts in the first part with a literature study of network security, its usefulness and its scope. Subsequently, the function and utility of network simulators and their differences from simulators are extensively discussed. Finally, various types of network simulators available for research purposes are presented with the aim of investigating various security implementations. In the second part, various scenarios related to the security of modern computer networks such as alternative ways of interconnecting and protecting networks as well as security solutions are extensively studied. Finally, the implementation of these scenarios is carried out and presented in detail using the Cisco Packet Tracer simulator, a simulator free on the market for engineers and researchers.