Quick definition: Transport Layer Security (TLS) is the most widely used security protocol for communications over the Internet. TLS provides three main functions: authentication, encryption, and verification. It encrypts transmissions using a system of certificates and keys, verifies both network entities are authorized to transmit/receive data, and ensures the data hasn’t been corrupted.
Get in touch with our IoT experts
Discover how emnify can help you grow your business and talk to one of our IoT consultants today!
A Comprehensive Guide to IoT Protocols
When network entities like servers, gateways, routers, applications, and connected devices interact, protocols give them a shared language. A protocol is a set of rules both network entities must have in common in order to communicate. It governs what their interactions look like, what values and attributes can be transmitted, how they’re received and processed, what security methods will be used, and more.
What Is Transmission Control Protocol (TCP)?
Unlike User Datagram Protocol (UDP)—another standard that applications use to exchange data—TCP is designed for accuracy, not speed. In data transport, data packets can sometimes arrive out of order or get lost. TCP numbers each packet to ensure that every piece reaches its destination and can be rearranged if needed. When packets don’t arrive within a specified timeframe, Transmission Control Protocol requests re-transmission of the lost data.
What Is User Datagram Protocol (UDP)?
When higher-level protocols need to transmit data quickly, they rely on UDP to package and distribute that data over the Internet Protocol (IP). (If you wish to know more about protocols and IoT check out our Comprehensive Guide to IoT Protocols.)