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The Payment Card Industry Data Security Standard (PCI-DSS).The Health Insurance Portability and Accountability Act (HIPAA).For the sake of brevity, this article will only study the three most adopted documents: There are several entities that maintain guidelines for TLS with regard to network security, such as the United States Department of Health and Human Services (HHS) or the National Institute of Standards and Technology (NIST). (For further help, we’ve also given example configurations of the most popular web server solutions in the appendix.) This article is a brief guide to help you configure a secure server to meet expected TLS standards in 2021. Understandably, navigating through this sea of standards in order to set up a modern TLS instance can be a real headache for administrators. Unfortunately, there are numerous such standards, with different sectors requiring compliance with different, applicable documents, while the standards themselves also evolve over time, accommodating changes in the sector they were designed to protect. This volatility has motivated various standards organizations to publish guideline documents, so that a minimum baseline for TLS security could be established in a particular market, sector or service. Algorithms can become obsolete over time, or practices can be abandoned, with each change affecting the overall security of a TLS instance (like the one protecting your connection right now). Moreover, TLS, like SSL before it, constantly evolves with the security industry-new technology and business requirements must be satisfied, while the latest security threats must be mitigated. Rather, the security TLS provides arises from the cooperation of various cryptographic algorithms. TLS usually functions quietly in the background, but contrary to what one might think, TLS is not a black box that just works. It (and its predecessor, Secure Sockets Layer or SSL) have been used for decades in many applications, but most notably in browsers when they visit HTTPS websites. The Transport Layer Security (TLS) protocol is the primary means of protecting network communications over the Internet.