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mod_log_ringbuffer: Hook POSIX signals via event only
author Kim Alvefur <zash@zash.se>
date Sat, 02 Mar 2024 15:11:20 +0100
parents 36b5677b9648
children
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1 ---
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2 labels:
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3 - 'Stage-Alpha'
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4 summary: s2s to Tor hidden services
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5 ...
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6
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7 Introduction
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8 ============
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9
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10 This plugin allows Prosody to connect to other servers that are running
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11 as a Tor hidden service. Running Prosody on a hidden service works
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12 without this module, this module is only necessary to allow Prosody to
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13 federate to hidden XMPP servers.
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15 For general info about creating a hidden service, see
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16 [https://community.torproject.org/onion-services/setup/](https://community.torproject.org/onion-services/setup/).
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18 Usage
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19 =====
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20
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21 This module depends on the bit32 Lua library.
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23 To create a hidden service that can federate with other hidden XMPP
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24 servers, first add a hidden serivce to Tor. It should listen on port
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25 5269 and optionally also on 5222 (if c2s connections to the hidden
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26 service should be allowed).
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27
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28 Use the hostname that Tor gives with a virtualhost:
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29
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30 VirtualHost "555abcdefhijklmn.onion"
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31 modules_enabled = { "onions" };
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32
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33 Configuration
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34 =============
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36 Name Description Type Default value
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37 ---------------------- ----------------------------------------------------- --------- ---------------
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38 onions\_socks5\_host the host to connect to for Tor's SOCKS5 proxy string "127.0.0.1"
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39 onions\_socks5\_port the port to connect to for Tor's SOCKS5 proxy integer 9050
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40 onions\_only forbid all connection attempts to non-onion servers boolean false
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41 onions\_tor\_all pass all s2s connections through Tor boolean false
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42 onions\_map override the address for a host table {}
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43
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44 By setting `onions_map`, it is possible to override the address used to
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45 connect to a given host with the address of a hidden service. The
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46 configuration of `onions_map` works as follows:
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47
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48 onions_map = {
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49 ["jabber.calyxinstitute.org"] = "ijeeynrc6x2uy5ob.onion";
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50 }
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51
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52 or, to also specify a port:
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53
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54 onions_map = {
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55 ["jabber.calyxinstitute.org"] = { host = "ijeeynrc6x2uy5ob.onion", port = 5269 };
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56 }
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57
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58 Compatibility
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59 =============
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60
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61 ----- --------------
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62 0.8 Doesn't work
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63 0.9 Works
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64 ----- --------------
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66 Notes
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67 =====
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68
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69 - `onions_tor_all` does not look up SRV records first. Therefore it
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70 will fail for many servers.
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71 - mod\_onions currently does not support connecting to `.onion`
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72 entries in SRV records.
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74 Security considerations
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75 =======================
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76
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77 - Running a hidden service on a server together with a normal server
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78 might expose the hidden service.
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79 - A hidden service that wants to remain hidden should either disallow
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80 s2s to non-hidden servers or pass all s2s traffic through Tor
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81 (setting either `onions_only` or `onions_tor_all`).