server{
[...]
## Block SQL injections
set$block_sql_injections0;
if($query_string ~ "union.*select.*\("){
set$block_sql_injections1;
}
if($query_string ~ "union.*all.*select.*"){
set$block_sql_injections1;
}
if($query_string ~ "concat.*\("){
set$block_sql_injections1;
}
if($block_sql_injections = 1){
return403;
}
## Block file injections
set$block_file_injections0;
if($query_string ~ "[a-zA-Z0-9_]=http://"){
set$block_file_injections1;
}
if($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+"){
set$block_file_injections1;
}
if($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+"){
set$block_file_injections1;
}
if($block_file_injections = 1){
return403;
}
## Block common exploits
set$block_common_exploits0;
if($query_string ~ "(<|%3C).*script.*(>|%3E)"){
set$block_common_exploits1;
}
if($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})"){
set$block_common_exploits1;
}
if($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})"){
set$block_common_exploits1;
}
if($query_string ~ "proc/self/environ"){
set$block_common_exploits1;
}
if($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)"){
set$block_common_exploits1;
}
if($query_string ~ "base64_(en|de)code\(.*\)"){
set$block_common_exploits1;
}
if($block_common_exploits = 1){
return403;
}
## Block spam
set$block_spam0;
if($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b"){
set$block_spam1;
}
if($query_string ~"\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b"){
set$block_spam1;
}
if($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b"){
set$block_spam1;
}
if($query_string ~"\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b"){
set$block_spam1;
}
if($block_spam = 1){
return403;
}
## Block user agents
set$block_user_agents0;
# Don&＃39;t disable wget if you need it to run cron jobs!
#if ($http_user_agent ~ "Wget") {
# set $block_user_agents 1;
#}
# Disable Akeeba Remote Control 2.5 and earlier
if($http_user_agent ~ "Indy Library"){
set$block_user_agents1;
}
# Common bandwidth hoggers and hacking tools.
if($http_user_agent ~ "libwww-perl"){
set$block_user_agents1;
}
if($http_user_agent ~ "GetRight"){
set$block_user_agents1;
}
if($http_user_agent ~ "GetWeb!"){
set$block_user_agents1;
}
if($http_user_agent ~ "Go!Zilla"){
set$block_user_agents1;
}
if($http_user_agent ~ "Download Demon"){
set$block_user_agents1;
}
if($http_user_agent ~ "Go-Ahead-Got-It"){
set$block_user_agents1;
}
if($http_user_agent ~ "TurnitinBot"){
set$block_user_agents1;
}
if($http_user_agent ~ "GrabNet"){
set$block_user_agents1;
}
if($block_user_agents = 1){
return403;
}
}
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