prosody-modules
f2363e6d9a64
mod_log_auth/README.markdown

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mod_log_auth/README.markdown @ 5390:f2363e6d9a64

mod_http_oauth2: Advertise the currently supported id_token signing algorithm This field is REQUIRED. The algorithm RS256 MUST be included, but isn't because we don't implement it, as that would require implementing a pile of additional cryptography and JWT stuff. Instead the id_token is signed using the client secret, which allows verification by the client, since it's a shared secret per OpenID Connect Core 1.0 § 10.1 under Symmetric Signatures. OpenID Connect Discovery 1.0 has a lot of REQUIRED and MUST clauses that are not supported here, but that's okay because this is served from the RFC 8414 OAuth 2.0 Authorization Server Metadata .well-known endpoint!
author Kim Alvefur <zash@zash.se>
date Sun, 30 Apr 2023 16:13:40 +0200
parent 2347:a47520a2c59d
line wrap: on
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---
labels:
- 'Stage-Stable'
summary: Log failed authentication attempts with their IP address
...

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

Prosody doesn't write IP addresses to its log file by default for
privacy reasons (unless debug logging is enabled).

This module enables logging of the IP address in a failed authentication
attempt so that those trying to break into accounts for example can be
blocked.

fail2ban configuration
======================

fail2ban is a utility for monitoring log files and automatically
blocking "bad" IP addresses at the firewall level.

With this module enabled in Prosody you can use the following example
configuration for fail2ban:

    # /etc/fail2ban/filter.d/prosody-auth.conf
    # Fail2Ban configuration file for prosody authentication
    [Definition]
    failregex = Failed authentication attempt \(not-authorized\) for user .* from IP: <HOST>
    ignoreregex =

And at the appropriate place (usually the bottom) of
/etc/fail2ban/jail.conf add these lines:

    [prosody]
    enabled = true
    port    = 5222
    filter  = prosody-auth
    logpath = /var/log/prosody/prosody*.log
    maxretry = 6

Compatibility
-------------

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