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@@ -5,14 +5,17 @@
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**SSL/TLS support**
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-!!! important
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- TLS module requires [net](net.md) module.
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+!!! attention
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+ The TLS module depends on the [net](net.md) module, it is a required dependency.
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-NodeMCU includes [mbed TLS library](https://tls.mbed.org/). With default config it supports **TLS** 1.0 / 1.1 / 1.2 and most common cipher suites, including DH/ECDH key exchange methods.
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+NodeMCU includes the open-source version of [mbed TLS library](https://tls.mbed.org/). With the NodeMCU default configuration it supports **TLS** 1.0 / 1.1 / 1.2 and the most common cipher suites, including DH/ECDH. ECDSA-based cipher suites are disabled by default.
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-Full list of features you may get on [mbed TLS page](https://tls.mbed.org/core-features).
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+!!! tip
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+ The complete configuration is stored in [user_mbedtls.h](../../../app/include/user_mbedtls.h). This is the file to edit if you build your own firmware and want to change mbed TLS behavior.
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-This controls certificate verification when SSL is in use.
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+For a list of features have a look at the [mbed TLS features page](https://tls.mbed.org/core-features).
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+
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+This module handles certificate verification when SSL/TLS is in use.
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## tls.createConnection()
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