Bad SEO Google 404 with FFPC

Hi,

BIG ERROR for 404 with FFPC (BAD SEO Google) !

Testing header with https://web-sniffer.net :

– Without FFPC : 404 0K

– With FFPC : BAD header return ! :

Example for exanple.com/test404 :

One click for exanple.com/test404 (verify by https://web-sniffer.net) : header 200 !!!
Second click (just after, on button verify) : header 404.My ghost :

In Better Security plugins (verify 404)… For Google, it’s 404 !!!!

My config : Nginx+php-fpm+memcached+apc with Debian Wheezy (+Virtualmin/webmin)

My ghost :

fastcgi_read_timeout 60;
server {
	server_name example.com www.example.com;
	listen XX.XXX.180.XX;
	root /home/example/public_html;
	index index.html index.htm index.php;
try_files $uri $uri/ /index.php?$args; #Pretty url WordPress
	access_log /var/log/virtualmin/example.com_access_log;
	error_log /var/log/virtualmin/example.com_error_log;
	fastcgi_param GATEWAY_INTERFACE CGI/1.1;
	fastcgi_param SERVER_SOFTWARE nginx;
	fastcgi_param QUERY_STRING $query_string;
	fastcgi_param REQUEST_METHOD $request_method;
	fastcgi_param CONTENT_TYPE $content_type;
	fastcgi_param CONTENT_LENGTH $content_length;
	fastcgi_param SCRIPT_FILENAME /home/example/public_html$fastcgi_script_name;
	fastcgi_param SCRIPT_NAME $fastcgi_script_name;
	fastcgi_param REQUEST_URI $request_uri;
	fastcgi_param DOCUMENT_URI $document_uri;
	fastcgi_param DOCUMENT_ROOT /home/example/public_html;
	fastcgi_param SERVER_PROTOCOL $server_protocol;
	fastcgi_param REMOTE_ADDR $remote_addr;
	fastcgi_param REMOTE_PORT $remote_port;
	fastcgi_param SERVER_ADDR $server_addr;
	fastcgi_param SERVER_PORT $server_port;
	fastcgi_param SERVER_NAME $server_name;
	fastcgi_param HTTPS $https;

	location ~ \.php$ {
		try_files $uri =404;
		#fastcgi_pass unix:/var/php-nginx/13830402164045.sock/socket;
                fastcgi_pass unix:/var/run/php5-fpm.sock;
	}

	listen XX.XXX.180.XX:443 default_server ssl;
	ssl_certificate /home/example/ssl.cert;
	ssl_certificate_key /home/example/ssl.key;
	rewrite_log off;

# BEGIN Better WP Security

    set $susquery 0;
    set $rule_2 0;
    set $rule_3 0;
    rewrite ^wp-includes/(.*).php /not_found last;
    rewrite ^/wp-admin/includes(.*)$ /not_found last;
    if ($request_method ~* "^(TRACE|DELETE|TRACK)"){ return 403; }
    if ($args ~* "\.\./") { set $susquery 1; }
    if ($args ~* ".(bash|git|hg|log|svn|swp|cvs)") { set $susquery 1; }
    if ($args ~* "etc/passwd") { set $susquery 1; }
    if ($args ~* "boot.ini") { set $susquery 1; }
    if ($args ~* "ftp:") { set $susquery 1; }
    if ($args ~* "http:") { set $susquery 1; }
    if ($args ~* "https:") { set $susquery 1; }
    if ($args ~* "(<|%3C).*script.*(>|%3E)") { set $susquery 1; }
    if ($args ~* "mosConfig_[a-zA-Z_]{1,21}(=|%3D)") { set $susquery 1; }
    if ($args ~* "base64_encode") { set $susquery 1; }
    if ($args ~* "(%24&x)") { set $susquery 1; }
    if ($args ~* "(\[|\]|\(|\)|<|>|ê|\"|;|\?|\*|=$)"){ set $susquery 1; }
    if ($args ~* "("|'|<|>|\|{|||%24&x)"){ set $susquery 1; }
    if ($args ~* "(127.0)") { set $susquery 1; }
    if ($args ~* "(globals|encode|localhost|loopback)") { set $susquery 1; }
    if ($args ~* "(request|select|insert|concat|union|declare)") { set $susquery 1; }
    if ($http_cookie !~* "wordpress_logged_in_" ) {
        set $susquery 2$susquery;
        set $rule_2 1;
        set $rule_3 1;
    }
    if ($args !~ "^loggedout=true") { set $susquery 3$susquery; }
    if ($susquery = 4321) { return 403; }
    rewrite ^/login/?$ /wp-login.php?gzepb0rpx2crvkmdenbnb redirect;
    if ($rule_2 = 1) { rewrite ^/admin/?$ /wp-login.php?gzepb0rpx2crvkmdenbnb&redirect_to=/wp-admin/ redirect; }
    if ($rule_2 = 0) { rewrite ^/admin/?$ /wp-admin/?gzepb0rpx2crvkmdenbnb redirect; }
    rewrite ^/register/?$ /wp-login.php?gzepb0rpx2crvkmdenbnb&action=register redirect;
    if ($uri !~ "^(.*)admin-ajax.php") { set $rule_3 2$rule_3; }
    if ($http_referer !~* wp-admin ) { set $rule_3 3$rule_3; }
    if ($http_referer !~* wp-login.php ) { set $rule_3 4$rule_3; }
    if ($http_referer !~* login ) { set $rule_3 5$rule_3; }
    if ($http_referer !~* admin ) { set $rule_3 6$rule_3; }
    if ($http_referer !~* register ) { set $rule_3 7$rule_3; }
    if ($args !~ "^action=logout") { set $rule_3 8$rule_3; }
    if ($args !~ "^gzepb0rpx2crvkmdenbnb") { set $rule_3 9$rule_3; }
    if ($args !~ "^action=rp") { set $rule_3 0$rule_3; }
    if ($args !~ "^action=register") { set $rule_3 a$rule_3; }
    if ($args !~ "^action=postpass") { set $rule_3 b$rule_3; }
    if ($rule_3 = ba0987654321) {
        rewrite ^(.*/)?wp-login.php /not_found redirect;
        rewrite ^/wp-admin(.*)$ /not_found redirect;
    }
# END Better WP Security

# Cache client
expires 30d;
add_header Cache-Control public;

    # set a nice expire for assets
    location ~* "^.+\.(jpeg|gif|css|png|js|ico|pdf|zip|tar|tgz|mp3|wav|swf)$" {
        access_log off;
        expires    max;
        add_header Cache-Control public;
            ##  fastcgi_hide_header Set-Cookie;
    }

# gzip
gzip            on;
gzip_disable    "MSIE [1-6].(?!.*SV1)";
gzip_vary       on;
gzip_comp_level 6;
gzip_proxied    any;
gzip_buffers    16 8k;
gzip_types text/plain text/html text/css application/json  application/x-javascript text/xml application/xml application/xml+rss  text/javascript;

}

https://www.ads-software.com/plugins/wp-ffpc/