It is a compilation of best practices, questions, and scenarios. The Threat Protection System (TPS) family of devices includes the T-Series (440T, 2200T), TX-Series (1100TX, 5500TX, 8200TX, 8400TX), TXE-Series (8600TXE, 9200TXE), and vTPS. The TPS functions as both a network and a security device.