IMPLEMENTASI MONITORING KEAMANAN JARINGAN MENGGUNAKAN PORT KNOCKING BERBASIS TELEGRAM

Abstrak

Digital technology advancements have increased the vulnerability of computer networks to cyberattacks such as hacking and malware. Weaknesses in security systems, particularly in routers—such as weak authentication and insecure configurations—can make networks easy to exploit. This study aims to enhance network security by implementing a port knocking method on MikroTik routers, with real-time notifications via telegram. The research employs the Network Development Life Cycle (NDLC) method, which includes five phases: Analysis, Design, Simulation Prototyping, Implementation, and Monitoring. Testing was conducted at the Jalatrang village office in Ciamis Regency, where security vulnerabilities, particularly in MikroTik router logins, were identified. The port knocking method obscures important ports, opening them only after the correct sequence of "knocks" is performed. Integration with Telegram provides real-time notifications, helping administrators receive information more quickly. Port scanning was used to test various attack scenarios. Results indicate that the port knocking method successfully improved network security by concealing ports such as Winbox from scanners, thereby reducing the risk of unauthorized access. The use of telegram facilitated the management and monitoring of MikroTik routers. Implementing port knocking with Telegram-based notifications proves effective in enhancing security and streamlining overall network management.