Mercurial > prosody-modules
view mod_tls_policy/README.markdown @ 5921:e67fc7b66c13
mod_sasl2_fast: Fix malformed-request when using HT-*-NONE (thanks lnj!)
This crept into the previous commit which tried to fail early when CB was
requested but unavailable - that commit did not actually check that CB *was*
requested.
author | Matthew Wild <mwild1@gmail.com> |
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date | Fri, 07 Jun 2024 16:26:54 +0100 |
parents | ad24f8993385 |
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--- summary: Cipher policy enforcement with application level error reporting ... # Introduction This module arose from discussions at the XMPP Summit about enforcing better ciphers in TLS. It may seem attractive to disallow some insecure ciphers or require forward secrecy, but doing this at the TLS level would the user with an unhelpful "Encryption failed" message. This module does this enforcing at the application level, allowing better error messages. # Configuration First, download and add the module to `module_enabled`. Then you can decide on what policy you want to have. Requiring ciphers with forward secrecy is the most simple to set up. ``` lua tls_policy = "FS" -- allow only ciphers that enable forward secrecy ``` A more complicated example: ``` lua tls_policy = { c2s = { encryption = "AES"; -- Require AES (or AESGCM) encryption protocol = "TLSv1.2"; -- and TLSv1.2 bits = 128; -- and at least 128 bits (FIXME: remember what this meant) } s2s = { cipher = "AESGCM"; -- Require AESGCM ciphers protocol = "TLSv1.[12]"; -- and TLSv1.1 or 1.2 authentication = "RSA"; -- with RSA authentication }; } ``` # Compatibility Requires LuaSec 0.5