DEVELOPMENT OF RECOMMENDATIONS ON IMPROVEMENT OF CISCO NETWORK SECURITY SYSTEM BASED ON SDN TECHNOLOGY

Abstract

This master’s dissertation is dedicated to the topic "Development of recommendations for improving the security system of Cisco networks based on SDN technology," which substantiates the necessity of modern solutions to address security challenges in Cisco networks. The dissertation comprehensively analyzes the structure of traditional Cisco networks, the threats directed at them, existing protection tools, and the capabilities of Software Defined Networking (SDN) technology. Within the framework of the study, SDN-based security measures were developed in the Cisco Packet Tracer environment, achieving a 98% reduction in disruptive attacks (e.g., DoS attacks) by limiting ICMP traffic to 9.5 packets per second. Additionally, a mechanism for applying SDN solutions to identify and mitigate high-priority risks in network security is proposed.