Furkan Onder

As the instructor of the Python 102 course, I taught students advanced Python topics such as iterators, generators, namespaces, decorators, context managers and closures. I organized interactive and hands-on classes that allowed students to learn the Python programming language in depth.

By explaining in detail the working structure of the CPython interpreter and virtual machine, I helped students write and understand Python code more effectively.

The training provided me with a solid foundation in managing modern network infrastructures. Key skills and knowledge gained:

• Detailed exploration of the OSI Model, understanding the functions of each layer.
• Proficiency in IPv4 and IPv6 addressing and practical experience in IP address management.
• Understanding packet switching processes and routing protocols.
• Hands-on experience in VLAN configuration and inter-VLAN routing.
• Familiarity with DHCP, ACL, and other fundamental network management protocols.

• Prepared and tested Raspberry Pi 4 images with QEMU and flashed them onto boards.
• Sketched basic geometric shapes (triangle, circle, square) on bare metal ARM.
• Introduced the virtual machine concept and eBPF. Experimented with process monitoring and profiling using eBPF hooks.
• Built a primitive firewall with XDP and developed XDP programs for implementing basic ACL rules and user quotas on ARM.

• Prepared and tested Raspberry Pi 4 images with QEMU and flashed them onto boards.
• Completed a workshop on eBPF based XDP (Express Data Path) for sending and receiving network packets on the Rasperry Pi's.

This training provided a deep understanding of Linux kernel internals, focusing on netfilter and in-kernel virtual machines. Key topics included:

• Netfilter Framework and Hooking Mechanism: A thorough understanding of the netfilter framework, a fundamental component within the Linux kernel for packet filtering and routing, was acquired.
• In-Kernel Virtual Machines: The concept of virtual machines was discussed, and in-kernel virtual machines were examined to efficient network operations.
• BPF and eBPF: Practical applications of Berkeley Packet Filter (BPF) and extended BPF (eBPF) technologies were explored, focusing on traffic analysis, filtering, and processing capabilities.

Hands-on experience included configuring firewall and router-based Linux systems on VirtualBox and GNS3, enhancing skills in network management and troubleshooting.