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mod_tls_policy/README.markdown @ 4646:072d078be095
mod_storage_xmlarchive: Advertise capabilities (none atm)
Both 'total' and 'quota' would be prohibitively expensive for the kind
of archives this module targets as it would require counting items
across the entire archive.
| author | Kim Alvefur <zash@zash.se> |
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| date | Fri, 13 Aug 2021 01:18:32 +0200 |
| parent | 1845:ad24f8993385 |
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1 --- |
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mod_tls_policy/README: Fix summary so modules.prosody.im understands it
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2 summary: Cipher policy enforcement with application level error reporting |
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3 ... |
| 1842 | 4 |
| 5 # Introduction | |
| 6 | |
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7 This module arose from discussions at the XMPP Summit about enforcing |
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8 better ciphers in TLS. It may seem attractive to disallow some insecure |
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9 ciphers or require forward secrecy, but doing this at the TLS level |
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10 would the user with an unhelpful "Encryption failed" message. This |
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11 module does this enforcing at the application level, allowing better |
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parents:
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12 error messages. |
| 1842 | 13 |
| 14 # Configuration | |
| 15 | |
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16 First, download and add the module to `module_enabled`. Then you can |
| 1842 | 17 decide on what policy you want to have. |
| 18 | |
| 19 Requiring ciphers with forward secrecy is the most simple to set up. | |
| 20 | |
| 21 ``` lua | |
| 22 tls_policy = "FS" -- allow only ciphers that enable forward secrecy | |
| 23 ``` | |
| 24 | |
| 25 A more complicated example: | |
| 26 | |
| 27 ``` lua | |
| 28 tls_policy = { | |
| 29 c2s = { | |
| 30 encryption = "AES"; -- Require AES (or AESGCM) encryption | |
| 31 protocol = "TLSv1.2"; -- and TLSv1.2 | |
| 32 bits = 128; -- and at least 128 bits (FIXME: remember what this meant) | |
| 33 } | |
| 34 s2s = { | |
| 35 cipher = "AESGCM"; -- Require AESGCM ciphers | |
| 36 protocol = "TLSv1.[12]"; -- and TLSv1.1 or 1.2 | |
| 37 authentication = "RSA"; -- with RSA authentication | |
| 38 }; | |
| 39 } | |
| 40 ``` | |
| 41 | |
| 42 # Compatibility | |
| 43 | |
| 44 Requires LuaSec 0.5 | |
| 45 |
