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| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Mon, 14 Sep 2015 12:49:54 +0200 |
| parent | 1838:1c6d04f012e9 |
| child | 1950:f118e419a712 |
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| 1803 | 1 --- |
| 2 labels: | |
| 3 - 'Stage-Alpha' | |
| 4 - 'Type-S2SAuth' | |
| 5 summary: S2S authentication using DANE | |
| 6 ... | |
| 7 | |
| 8 Introduction | |
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9 ============ |
| 1803 | 10 |
| 11 This module implements DANE as described in[Using DNS Security | |
| 12 Extensions (DNSSEC) and DNS-based Authentication of Named Entities | |
| 13 (DANE) as a Prooftype for XMPP Domain Name | |
| 14 Associations](http://tools.ietf.org/html/draft-miller-xmpp-dnssec-prooftype). | |
| 15 | |
| 16 Dependencies | |
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17 ============ |
| 1803 | 18 |
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19 This module requires a DNSSEC aware DNS resolver. Prosodys internal DNS |
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20 module does not support DNSSEC. Therefore, to use this module, a |
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21 replacement is needed, such as [this |
| 1803 | 22 one](https://www.zash.se/luaunbound.html). |
| 23 | |
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24 LuaSec 0.5 or later is also required. |
| 1803 | 25 |
| 26 Configuration | |
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27 ============= |
| 1803 | 28 |
| 29 After [installing the | |
| 30 module](https://prosody.im/doc/installing_modules), just add it to | |
| 31 `modules_enabled`; | |
| 32 | |
| 33 modules_enabled = { | |
| 34 ... | |
| 35 "s2s_auth_dane"; | |
| 36 } | |
| 37 | |
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38 DANE Uses |
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39 --------- |
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40 |
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41 By default, only DANE uses are enabled. |
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42 |
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43 dane_uses = { "DANE-EE", "DANE-TA" } |
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44 |
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45 Use flag Description |
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46 ----------- ------------------------------------------------------------------------------------------------------- |
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47 `DANE-EE` Most simple use, usually a fingerprint of the full certificate or public key used the service |
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48 `DANE-TA` Fingerprint of a certificate or public key that has been used to issue the service certificate |
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49 `PKIX-EE` Like `DANE-EE` but the certificate must also pass normal PKIX trust checks (ie standard certificates) |
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50 `PKIX-TA` Like `DANE-TA` but must also pass normal PKIX trust checks (ie standard certificates) |
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51 |
| 1803 | 52 DNS Setup |
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53 ========= |
| 1803 | 54 |
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55 In order for other services to verify your site using using this plugin, |
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56 you need to publish TLSA records (and they need to have this plugin). |
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57 Here's an example using `DANE-EE Cert SHA2-256` for a host named |
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58 `xmpp.example.com` serving the domain `example.com`. |
| 1803 | 59 |
| 60 $ORIGIN example.com. | |
| 61 ; Your standard SRV record | |
| 62 _xmpp-server._tcp.example.com IN SRV 0 0 5269 xmpp.example.com. | |
| 63 ; IPv4 and IPv6 addresses | |
| 64 xmpp.example.com. IN A 192.0.2.68 | |
| 65 xmpp.example.com. IN AAAA 2001:0db8:0000:0000:4441:4e45:544c:5341 | |
| 66 | |
| 67 ; The DANE TLSA records. These three are equivalent, you would use only one of them. | |
| 68 ; First, using symbolic names: | |
| 69 _5269._tcp.xmpp.example.com. 300 IN TLSA DANE-EE Cert SHA2-256 E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855 | |
| 70 ; Using numbers: | |
| 71 _5269._tcp.xmpp.example.com. 300 IN TLSA 3 0 1 E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855 | |
| 72 ; Raw binary format, should work even with very old DNS tools: | |
| 73 _5269._tcp.xmpp.example.com. 300 IN TYPE52 \# 35 030001E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855 | |
| 74 | |
| 75 [List of DNSSEC and DANE | |
| 76 tools](http://www.internetsociety.org/deploy360/dnssec/tools/) | |
| 77 | |
| 78 Further reading | |
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79 =============== |
| 1803 | 80 |
| 81 - [DANE TLSA implementation and operational | |
| 82 guidance](http://tools.ietf.org/html/draft-ietf-dane-ops) | |
| 83 | |
| 84 Compatibility | |
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85 ============= |
| 1803 | 86 |
| 87 Requires 0.9 or above. |
