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A Remediation Component for Apache.
Beta Remediation Component, please report any issues on GitHub
How does it work ?
This component leverages Apache's module mecanism to provide IP address blocking capability.
The module supports Live mode with a local (in-memory) cache.
At the back, this component uses mod_proxy
, mod_ssl
for requests to LAPI, and mod_socache
for the caching feature.
Installation
Packages are only available for debian and ubuntu systems.
The module can be built and installed on other platform as well.
Please keep in mind that this bouncer only supports live mode.
- Debian/Ubuntu
- Others (build from source)
Repository configuration
Please note that the repository for this package is not the same as the one holding CrowdSec's binary packages,
curl -s https://packagecloud.io/install/repositories/crowdsec/crowdsec-apache/script.deb.sh | sudo bash
Installation
sudo apt-get install crowdsec-apache2-bouncer
Clone or download directly from our GitHub repository.
aclocal
autoconf
autoheader
automake --add-missing
./configure
make
sudo make install
sudo cp config/mod_crowdsec.* /etc/apache2/mods-available/
sudo mkdir -p /etc/crowdsec/bouncers/
sudo cp ./config/crowdsec-apache2-bouncer.conf /etc/crowdsec/bouncers/
Initial Configuration
Enable the mod_crowdsec module:
sudo a2enmod mod_crowdsec
Generate an API key for the bouncer [1]:
sudo cscli bouncers add apache2
Remediation Component config's is located in /etc/crowdsec/bouncers/crowdsec-apache2-bouncer.conf
:
## Replace the API key with the newly generated one [1]
CrowdsecAPIKey this_is_a_bad_password
If needed, edit CrowdsecURL
(and other parameters)
sudo systemctl restart apache2
Configuration directives
The configuration file is stored in /etc/crowdsec/bouncers/crowdsec-apache2-bouncer.conf
by default.
Crowdsec
on|off
Enable or disable module globally:
off
(default): Module has to be enabled per location.on
: Module is enabled by default.
Behavior can be overriden in any location.
CrowdsecFallback
fail|block|allow
How to respond if the Crowdsec API is not available:
fail
returns a 500 Internal Server Error.block
returns a 302 Redirect (or 429 Too Many Requests if CrowdsecLocation is unset).allow
(default) will allow the request through.
CrowdsecBlockedHTTPCode
500|403|429
HTTP code to return when a request is blocked (default is 429
).
CrowdsecLocation
Set to the URL to redirect to when the IP address is banned. As per RFC 7231 may be a path, or a full URL. For example: /sorry.html
CrowdsecURL
Set to the URL of the Crowdsec API. For example: http://localhost:8080.
CrowdsecAPIKey
Set to the API key of the Crowdsec API. Add an API key using 'cscli bouncers add'.
CrowdsecCache
Enable the crowdsec cache. Defaults to 'none'. Options detailed here: https://httpd.apache.org/docs/2.4/socache.html.
CrowdsecCacheTimeout
Set the crowdsec cache timeout. Defaults to 60 seconds.
Next steps
Overriding HTTP Response
If you want to return custom HTTP code and/or content, you can use CrowdsecLocation
and RewriteRules
:
CrowdsecLocation /one/
<Location /one/>
Crowdsec off
RewriteEngine On
RewriteRule .* - [R=403,L]
# Require all denied
ErrorDocument 403 "hell nooo"
</Location>