DPI (Deep Packet Inspection), UDP, Nat, Wireshark, Vpns, Http, Dns, Https, Tls, Python, Embedded Linux, SSL, Test automation, Tcp/ip, Openwrt, PCAP analysis, Firewall behavior, nDPI, OpenSync, Threat simulation frameworks, Secure communication protocols, Cloud-native networking products, Zeek, MITM techniques, Tunneling protocols, Suricata