Mercurial > prosody-modules
annotate mod_limit_auth/README.markdown @ 4877:adc6241e5d16
mod_measure_process: Report the enforced limit
The soft limit is what the kernel actually enforces, while the hard
limit is is how far you can change the soft limit without privileges.
Unless the process dynamically adjusts the soft limit, knowing the hard
limit is not as useful as knowing the soft limit.
Reporting the soft limit and the number of in-use FDs allows placing
alerts on expressions like 'process_open_fds / process_max_fds >= 0.95'
| author | Kim Alvefur <zash@zash.se> |
|---|---|
| date | Tue, 18 Jan 2022 18:55:20 +0100 |
| parents | 4916c1b6517f |
| children |
| rev | line source |
|---|---|
| 1858 | 1 --- |
| 2 summary: Throttle authentication attempts with optional tarpit | |
| 3 ... | |
| 4 | |
| 5 Introduction | |
| 6 ============ | |
| 7 | |
| 8 This module lets you put a per-IP limit on the number of failed | |
| 9 authentication attempts. | |
| 10 | |
| 11 It features an optioanal | |
| 12 [tarpit](https://en.wikipedia.org/wiki/Tarpit_%28networking%29), i.e. | |
| 13 waiting some time before returning an "authentication failed" response. | |
| 14 | |
| 15 Configuration | |
| 16 ============= | |
| 17 | |
| 18 ``` {.lua} | |
| 19 modules_enabled = { | |
| 20 -- your other modules | |
| 21 "limit_auth"; | |
| 22 } | |
| 23 | |
| 24 limit_auth_period = 30 -- over 30 seconds | |
| 25 | |
| 26 limit_auth_max = 5 -- tolerate no more than 5 failed attempts | |
| 27 | |
|
2121
4916c1b6517f
Update READMEs to indicate that async requires trunk (dropped from prosody 0.10)
Kim Alvefur <zash@zash.se>
parents:
1858
diff
changeset
|
28 -- Will only work with Prosody trunk: |
| 1858 | 29 limit_auth_tarpit_delay = 10 -- delay answer this long |
| 30 ``` | |
| 31 | |
| 32 Compatibility | |
| 33 ============= | |
| 34 | |
|
2121
4916c1b6517f
Update READMEs to indicate that async requires trunk (dropped from prosody 0.10)
Kim Alvefur <zash@zash.se>
parents:
1858
diff
changeset
|
35 Requires 0.9 or later. The tarpit feature requires Prosody trunk. |