Blame | Last modification | View Log | RSS feed
# Fail2Ban filter to block web requests on a long or suspicious nature#[INCLUDES]# overwrite with apache-common.local if _apache_error_client is incorrect.before = apache-common.conf[Definition]failregex = ^%(_apache_error_client)s ((AH0013[456]: )?Invalid (method|URI) in request .*( - possible attempt to establish SSL connection on non-SSL port)?|(AH00565: )?request failed: URI too long \(longer than \d+\)|request failed: erroneous characters after protocol string: .*|AH00566: request failed: invalid characters in URI)(, referer: \S+)?$ignoreregex =# DEV Notes:## fgrep -r 'URI too long' httpd-2.*# httpd-2.2.25/server/protocol.c: "request failed: URI too long (longer than %d)", r->server->limit_req_line);# httpd-2.4.4/server/protocol.c: "request failed: URI too long (longer than %d)",## fgrep -r 'in request' ../httpd-2.* | fgrep Invalid# httpd-2.2.25/server/core.c: "Invalid URI in request %s", r->the_request);# httpd-2.2.25/server/core.c: "Invalid method in request %s", r->the_request);# httpd-2.2.25/docs/manual/rewrite/flags.html.fr:avertissements 'Invalid URI in request'.# httpd-2.4.4/server/core.c: "Invalid URI in request %s", r->the_request);# httpd-2.4.4/server/core.c: "Invalid method in request %s - possible attempt to establish SSL connection on non-SSL port", r->the_request);# httpd-2.4.4/server/core.c: "Invalid method in request %s", r->the_request);## fgrep -r 'invalid characters in URI' httpd-2.*# httpd-2.4.4/server/protocol.c: "request failed: invalid characters in URI");## http://svn.apache.org/viewvc/httpd/httpd/trunk/server/core.c?r1=739382&r2=739620&pathrev=739620# ...possible attempt to establish SSL connection on non-SSL port## https://wiki.apache.org/httpd/ListOfErrors# Author: Tim Connors