view mod_muc_ban_ip/README.markdown @ 5401:c8d04ac200fc

mod_http_oauth2: Reject loopback URIs as client_uri This really should be a proper website with info, https://localhost is not good enough. Ideally we'd validate that it's got proper DNS and is actually reachable, but triggering HTTP or even DNS lookups seems like it would carry abuse potential that would best to avoid.
author Kim Alvefur <zash@zash.se>
date Tue, 02 May 2023 16:20:55 +0200
parents 8de50be756e5
children
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---
labels:
- 'Stage-Alpha'
summary: Ban users from chatrooms by their IP address
...

Introduction
============

One frequent complaint about XMPP chatrooms (MUCs) compared to IRC is
the inability for a room admin to ban a user based on their IP address.
This is because an XMPP user is not identified on the network by their
IP address, only their JID.

This means that it is possible to create a new account (usually quite
easily), and rejoin the room that you were banned from.

This module allows the **user's** server to enforce bans by IP address,
which is very desirable for server admins who want to prevent their
server being used for spamming and abusive behaviour.

Details
=======

An important point to note is that this module enforces the IP ban on
the banned user's server, not on the MUC server. This means that:

-   The user's server MUST have this module loaded, however -
-   The module works even when the MUC is on a different server to the
    user
-   The MUC server does not need this module (it only needs to support
    the [standard ban
    protocol](http://xmpp.org/extensions/xep-0045.html#ban))
-   The module works for effectively banning [anonymous
    users](http://prosody.im/doc/anonymous_logins)

Also note that IP bans are not saved permanently, and are reset upon a
server restart.

Configuration
=============

There is no extra configuration for this module except for loading it.
Remember... do not load it on the MUC host, simply add it to your global
`modules_enabled` list, or under a specific host like:

``` lua
VirtualHost "anon.example.com"
  authentication = "anonymous"
  modules_enabled = { "muc_ban_ip" }
```

Compatibility
=============

  ----- --------------
  0.9   Works
  0.8   Doesn't work
  ----- --------------