nginx 拦截非法字符，nginx禁止url访问特定字符，nginx过滤url访问

参考代码一

#前缀为无限，后面的精准屏蔽字符 123
if  ($request_uri ~* "123") {
return 403   "I've recorded your ip Wait to check the water meter";
}

参考代码二

 #前缀为index.php，后面的精准屏蔽字符 123
 #资源宝分享：www.httple.net
  if  ($request_uri  ~* "/index.php\123") {
return 403   "I've recorded your ip Wait to check the water meter";
}

宝塔为例：/www/server/panel/vhost/nginx/你的网站域名.conf，复制代码点击保存

    #前缀为无限，后面的是屏蔽字符
if  ($request_uri ~* "../../../../../../") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为无限，后面的是屏蔽字符
if  ($request_uri ~* ";") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为无限，后面的是屏蔽字符
if  ($request_uri ~* "&") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为无限，后面的是屏蔽字符
if  ($request_uri ~* "base64") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\&") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\?") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\;") {
return 403   "I've recorded your ip Wait to check the water meter";
}
前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\＝") {
return 403   "I've recorded your ip Wait to check the water meter";
}
前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\=") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($requesturi  ~* "/index.php\") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php./") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\:") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\base64") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\%") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\wp-content") {
return 403   "I've recorded your ip Wait to check the water meter";
}
#前缀为index.php屏蔽，后面的是屏蔽字符
if  ($request_uri  ~* "/index.php\;amp") {
return 403   "I've recorded your ip Wait to check the water meter";
}

附带：nginx ql语句过滤、文件注入禁止、溢出攻击过滤、spam字段过滤、user-agents头过滤

if ($request_uri ~* "(cost\()|(concat\()") {
                 return 444;
         }
         if ($request_uri ~* "[+|(%20)]union[+|(%20)]") {
                 return 444;
         }
         if ($request_uri ~* "[+|(%20)]and[+|(%20)]") {
                 return 444;
         }
         if ($request_uri ~* "[+|(%20)]select[+|(%20)]") {
                 return 444;
         }

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 444;
}

溢出攻击过滤

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 444;
}

spam字段过滤
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 444;
}

set $block_user_agents 0;
if ($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 444;
}
}

自动防护

if ($request_uri ~* \.(htm|do)\?(.*)$) {
           set $req $2;
        }
        if ($req ~* "(cost\()|(concat\()") {
                return 503;
        }
        if ($req ~* "union[+|(%20)]") {
                return 503;
        }
        if ($req ~* "and[+|(%20)]") {
                return 503;
        }
        if ($req ~* "select[+|(%20)]") {
                return 503;
        }

以上配置仅作参考使用