Developing an Attack Warning Feature for Open Source Code

Network security is a major concern in today's digital era. Computer networks are constantly exposed to risks posed by hackers. To enhance network security, it is essential to have effective solutions that can scan for and detect signs of potential attacks. This study focuses on developing an attack alert feature using the open-source platform Nagios, one of the most widely used network monitoring tools. One of Nagios' key advantages is its open-source nature, which allows users to easily customize, edit, and add new features. The attack detection feature implemented in this project is based on an anomaly detection algorithm for TCP connection-oriented protocols. The algorithm is simple, easy to install, and capable of effectively detecting large-scale attacks using multiple techniques. When abnormal behavior is detected, Nagios sends an alert to the system administrator. With these capabilities, administrators can respond more proactively to potential threats and address issues at the early stages of an attack, minimizing damage and maintaining system integrity.