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Merge pull request #2226 from mbologna/nginx-forbidden 

Feat: ban nginx forbidden accesses
pull/3435/merge
Sergey G. Brester 2023-03-23 12:33:32 +01:00 committed by GitHub
parent d1d1730de0 9cbf59c827
commit a9b30eb86e
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1
ChangeLog
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@ -19,6 +19,7 @@ ver. 1.0.3-dev-1 (20??/??/??) - development nightly edition
(value read from `/proc/sys/net/ipv6/conf/all/disable_ipv6`) if available, otherwise seeks over local IPv6 from network interfaces (value read from `/proc/sys/net/ipv6/conf/all/disable_ipv6`) if available, otherwise seeks over local IPv6 from network interfaces
if available for platform and uses DNS to find local IPv6 as a fallback only if available for platform and uses DNS to find local IPv6 as a fallback only
* improve `ignoreself` by considering all local addresses from network interfaces additionally to IPs from hostnames (gh-3132) * improve `ignoreself` by considering all local addresses from network interfaces additionally to IPs from hostnames (gh-3132)
* `filter.d/nginx-forbidden.conf` - new filter to ban forbidden locations, e. g. using `deny` directive (gh-2226)
ver. 1.0.2 (2022/11/09) - finally-war-game-test-tape-not-a-nuclear-alarm ver. 1.0.2 (2022/11/09) - finally-war-game-test-tape-not-a-nuclear-alarm

25
config/filter.d/nginx-forbidden.conf Normal file
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@ -0,0 +1,25 @@
# fail2ban filter configuration for nginx forbidden accesses
#
# If you have configured nginx to forbid some paths in your webserver, e.g.:
#
# location ~ /\. {
# deny all;
# }
#
# if a client tries to access https://yoursite/.user.ini then you will see
# in nginx error log:
#
# 2018/09/14 19:03:05 [error] 2035#2035: *9134 access forbidden by rule, client: 10.20.30.40, server: www.example.net, request: "GET /.user.ini HTTP/1.1", host: "www.example.net", referrer: "https://www.example.net"
#
# By carefully setting this filter we ban every IP that tries too many times to
# access forbidden resources.
#
# Author: Michele Bologna https://www.michelebologna.net/
[Definition]
failregex = \[error\] \d+#\d+: \*\d+ access forbidden by rule, client: <HOST>
ignoreregex =
datepattern = {^LN-BEG}
journalmatch = _SYSTEMD_UNIT=nginx.service + _COMM=nginx

4
config/jail.conf
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@ -395,6 +395,10 @@ logpath = %(nginx_error_log)s
port = http,https port = http,https
logpath = %(nginx_access_log)s logpath = %(nginx_access_log)s
[nginx-forbidden]
port = http,https
logpath = %(nginx_error_log)s
# Ban attackers that try to use PHP's URL-fopen() functionality # Ban attackers that try to use PHP's URL-fopen() functionality
# through GET/POST variables. - Experimental, with more than a year # through GET/POST variables. - Experimental, with more than a year
# of usage in production environments. # of usage in production environments.

5
fail2ban/tests/files/logs/nginx-forbidden Normal file
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@ -0,0 +1,5 @@
# failJSON: { "time": "2018-09-14T19:03:05", "match": true , "host": "12.34.56.78" }
2018/09/14 19:03:05 [error] 2035#2035: *9134 access forbidden by rule, client: 12.34.56.78, server: www.example.net, request: "GET /wp-content/themes/evolve/js/back-end/libraries/fileuploader/upload_handler.php HTTP/1.1", host: "www.example.net", referrer: "http://example.net/foo.php"
# failJSON: { "time": "2018-09-13T15:42:05", "match": true , "host": "12.34.56.78" }
2018/09/13 15:42:05 [error] 2035#2035: *287 access forbidden by rule, client: 12.34.56.78, server: www.example.com, request: "GET /wp-config.php~ HTTP/1.1", host: "www.example.com"