• Organize and provide hands-on guidance during laboratory sessions, ensuring participants can understand the material well through hands-on practice.• Create customized network configuration plans according to the needs in the field, ensuring optimal and efficient network implementation.• Responsible for practicum activities in 3 classes every 2 weeks, ensuring the smooth running of each session and successful achievement of learning targets.• Reorganized network security and management modules for 6 learning modules, improving teaching effectiveness and material relevance to the latest technological developments.

• Built email servers using Postfix and Dovecot, ensuring efficient and secure internal and external communications.• Performed network maintenance and monitoring using Zabbix, then visualized the results with Grafana for easier and more in-depth analysis.• Maintained DNS records for internal network needs, ensuring optimal configuration and maintained security.• Installed Mikrotik hotspots to meet the school's needs, ensuring fast and stable internet access for users.

• Built gateway servers for multiple hubs in specific areas, ensuring efficient and stable network connectivity between locations.• Connecting various regions using a VPN-based Point To Point (PTP) method, which enables secure communication between far-flung networks.• Performed regular network maintenance and monitoring to maintain optimal performance and minimize downtime.• Installed Fortigate firewall devices with customized security policy settings, to protect the network from potential security threats.

* Repaired and restored neglected computers to ensure they were functional and usable.* Installed and configured campus Wi-Fi using Linksys devices, optimizing Wi-Fi band settings to prevent network interference.* Installed and configured Proxmox virtualization environments to support campus resource needs.* Set up and managed operating systems within Proxmox to optimize resource allocation for university operations.