Nginx - All Prevention

Prevention secara singkat berarti pencegahan atau tindakan untuk menghindari suatu risiko atau ancaman sebelum terjadi . 

 Dalam konteks keamanan, prevention bertujuan untuk melindungi sistem dari serangan, eksploitasi, atau penyalahgunaan dengan menerapkan aturan atau mekanisme pengamanan 

 Berikut Konfigurasinya : 

 ########################### XSS PREVENTION ##############################

 set $block_xss 0;

if ($query_string ~ "base64_(en|de)code\(.*\)") {

set $block_xss 1;

}

if ($request_uri ~ "base64_(en|de)code\(.*\)") {

 set $block_xss 1;

}

if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {

 set $block_xss 1;

}

if ($request_uri ~ "(<|%3C).*script.*(>|%3E)") {

 set $block_xss 1;

}

if ($query_string ~ "(<|%3C).*iframe.*(>|%3E)") {

 set $block_xss 1;

}

if ($request_uri ~ "(<|%3C).*iframe.*(>|%3E)") {

 set $block_xss 1;

}

if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {

 set $block_xss 1;

}

if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {

 set $block_xss 1;

}

if ($block_xss = 1) {

 return 403;

}

## Block SQL injections

 set $block_sql_injections 0;

 if ($query_string ~ "union.*select.*\(") {

 set $block_sql_injections 1;

 }

 if ($query_string ~ "union.*all.*select.*") {

 set $block_sql_injections 1;

 }

 if ($query_string ~ "concat.*\(") {

 set $block_sql_injections 1;

 }

 if ($block_sql_injections = 1) {

 return 403;

 }

 ## Block file injections

 set $block_file_injections 0;

 if ($query_string ~ "[a-zA-Z0-9_]=http://") {

 set $block_file_injections 1;

 }

 if ($query_string ~ "[a-zA-Z0-9_]=(\.\.//?)+") {

 set $block_file_injections 1;

 }

 if ($query_string ~ "[a-zA-Z0-9_]=/([a-z0-9_.]//?)+") {

 set $block_file_injections 1;

 }

 if ($block_file_injections = 1) {

 return 403;

 }

 ## Block common exploits

 set $block_common_exploits 0;

 if ($query_string ~ "(<|%3C).*script.*(>|%3E)") {

 set $block_common_exploits 1;

 }

 if ($query_string ~ "GLOBALS(=|\[|\%[0-9A-Z]{0,2})") {

 set $block_common_exploits 1;

 }

 if ($query_string ~ "_REQUEST(=|\[|\%[0-9A-Z]{0,2})") {

 set $block_common_exploits 1;

 }

 if ($query_string ~ "proc/self/environ") {

 set $block_common_exploits 1;

 }

 if ($query_string ~ "mosConfig_[a-zA-Z_]{1,21}(=|\%3D)") {

 set $block_common_exploits 1;

 }

 if ($query_string ~ "base64_(en|de)code\(.*\)") {

 set $block_common_exploits 1;

 }

 if ($block_common_exploits = 1) {

 return 403;

 }

 ## Block spam

 set $block_spam 0;

 if ($query_string ~ "\b(ultram|unicauca|valium|viagra|vicodin|xanax|ypxaieo)\b") {

 set $block_spam 1;

 }

 if ($query_string ~ "\b(erections|hoodia|huronriveracres|impotence|levitra|libido)\b") {

 set $block_spam 1;

 }

 if ($query_string ~ "\b(ambien|blue\spill|cialis|cocaine|ejaculation|erectile)\b") {

 set $block_spam 1;

 }

 if ($query_string ~ "\b(lipitor|phentermin|pro[sz]ac|sandyauer|tramadol|troyhamby)\b") {

 set $block_spam 1;

 }

 if ($block_spam = 1) {

 return 403;

 }

 ## Block user agents

 #SET $BLOCK_USER_AGENTS 0;

 # Don'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_agents 1;

 }

 # Common bandwidth hoggers and hacking tools.

 if ($http_user_agent ~ "libwww-perl") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "GetRight") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "GetWeb!") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "Go!Zilla") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "Download Demon") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "Go-Ahead-Got-It") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "TurnitinBot") {

 set $block_user_agents 1;

 }

 if ($http_user_agent ~ "GrabNet") {

 set $block_user_agents 1;

 }

 if ($block_user_agents = 1) {

 return 403;

 }