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Перевести биллинговую систему АСР Казна-39 на веб сервер nginx не составляет особого труда, но необходимо установить FastCGI и отредактировать пару файлов.

После перезда на nginx будут изменены порты биллинга:

Личный кабинет останется на стандартном

Админка уедет на 9443

Платёжные системы на 9442 (или на тот порт, который вы укажете сами, в целях допзащиты)

apt update
apt install nginx php php-fpm fcgiwrap spawn-fcgi

Проверяем состояние:

systemctl status nginx

Нстраиваем юнит:

[Unit]
Description=Simple CGI Server
After=nss-user-lookup.target
Requires=fcgiwrap.socket

[Service]
Environment=DAEMON_OPTS=-f
Environment=DAEMON_PROCS=100
EnvironmentFile=-/etc/default/fcgiwrap
ExecStart=/usr/sbin/fcgiwrap ${DAEMON_OPTS} -c ${DAEMON_PROCS}
User=www-data
Group=www-data

[Install]
Also=fcgiwrap.socket

После применяем

systemctl daemon-reload

Запускаем fcgiwrap:

service fcgiwrap start

Проверяем работу fcgiwrap

service fcgiwrap status
* Checking status of FastCGI wrapper fcgiwrap [ OK ]

Оптимизируем работу:

worker_processes 1;
worker_connections 1024;
gzip on;
gzip_types text/plain text/css application/json application/javascript text/xml application/xml application/xml+rss text/javascript;
keepalive_timeout 65;
client_max_body_size 10M;
server_tokens off;

Настраиваем конфиги хостов:

/etc/nginx/sites-available/ktk_admin.conf
/etc/nginx/sites-available/ktk_user.conf
/etc/nginx/sites-available/ktk_paysys.conf

Приводим в такой вид:

server {
    listen lk.it39.su:9443 default_server ssl;
    charset utf-8;
    autoindex off;
    server_name "lk.it39.su";
    root "/usr/abills/cgi-bin";
    index index.cgi;

#     include letsencrypt;
#     ssl_certificate /etc/letsencrypt/live/lk.it39.su/fullchain.pem;
#     ssl_certificate_key /etc/letsencrypt/live/lk.it39.su/privkey.pem;
#     ssl_trusted_certificate /etc/letsencrypt/live/lk.it39.su/chain.pem;

    ssl_certificate       /usr/abills/Certs/server.crt;
    ssl_certificate_key   /usr/abills/Certs/server.key;

    access_log /var/log/ktk-39/nginx/lk_user/access.log;
    error_log /var/log/ktk-39/nginx/lk_user/error.log;

        location / {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root "/usr/abills/cgi-bin/";
                index index.cgi;
        }

        location ~* \.php$ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                fastcgi_pass unix:/var/run/php/php8.3-fpm.sock;
                fastcgi_index index.php;
                fastcgi_read_timeout 360;
                include fastcgi_params;
        }

        location ~* \.cgi|pm$ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                fastcgi_pass unix:/var/run/fcgiwrap.socket;
                fastcgi_index index.cgi;
                fastcgi_pass_header Authorization;
                fastcgi_param HTTP_CGI_AUTHORIZATION $http_authorization;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                fastcgi_read_timeout 360;
                include fastcgi_params;
        }

        location /styles/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root /usr/abills/cgi-bin/;
        }

        location /img/calculator/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root /usr/abills/cgi-bin/;
        }

        location /admin/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                alias "/usr/abills/cgi-bin/admin/";
                index index.cgi;
        }

        location ^~ /api.cgi {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                try_files $uri /api.cgi$is_args$args;
                allow all;
                gzip off;
                fastcgi_param HTTPS on;
                fastcgi_pass unix:/var/run/fcgiwrap.socket;

                fastcgi_index index.cgi;
                fastcgi_param HTTP_CGI_AUTHORIZATION $http_authorization;
                fastcgi_param SCRIPT_FILENAME  /usr/abills/cgi-bin$fastcgi_script_name;
                include fastcgi_params;
        }
        location ^~ /img/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                alias /usr/abills/cgi-bin/img/;
                location ~* \.(ico|jpg|gif|png|css|js|JPG|GIF)$ {
        allow all;
        }
        deny all;
        }

        location ^~ /images/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                alias /usr/abills/ACP/templates/;
                location ~* \.(jpg|gif|png|css|js|JPG|GIF)$ {
        allow all;
      }
        deny all;
    }

server {
        listen lk.it39.su;
        access_log  off;
        error_log   off;
#       include letsencrypt;

        server_name lk.it39.su;

        location / {
                try_files $uri $uri/ =404;
                return 301 "https://lk.it39.su/";
        }
}

server {
    listen lk.it39.su:443 ssl;
    autoindex on;
    server_name "lk.it39.su";
#    include letsencrypt;
    root "/usr/abills/cgi-bin";

#    ssl_certificate /etc/letsencrypt/live/lk.it39.su/fullchain.pem;
#    ssl_certificate_key /etc/letsencrypt/live/lk.it39.su/privkey.pem;
#    ssl_trusted_certificate /etc/letsencrypt/live/lk.it39.su/chain.pem;

    ssl_certificate       /usr/abills/Certs/server.crt;
    ssl_certificate_key   /usr/abills/Certs/server.key;


    access_log /var/log/ktk-39/nginx/lk_user/access.log;
    error_log /var/log/ktk-39/nginx/lk_user/error.log;
#    limit_req zone=peripreq burst=300 nodelay;

        location / {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root "/usr/abills/cgi-bin/";
                index index.cgi;
        }

        location ~* \.cgi|pm$ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                fastcgi_param REMOTE_ADDR $http_x_real_ip;
                fastcgi_pass unix:/var/run/fcgiwrap.socket;
                fastcgi_index index.cgi;
                fastcgi_read_timeout 360;
                fastcgi_param HTTP_CGI_AUTHORIZATION $http_authorization;
                fastcgi_param SCRIPT_FILENAME $realpath_root$fastcgi_script_name;
                include fastcgi_params;
        }

        location /styles/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root /usr/abills/cgi-bin/;
        }

        location /admin/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                return 301 "https://lk.it39.su/";
        }

        location = /paysys_check.cgi {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                fastcgi_param REMOTE_ADDR $http_x_real_ip;
                fastcgi_pass unix:/var/run/fcgiwrap.socket;
                fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
                include fastcgi_params;
    
        # Если нужно разрешить доступ только с определенных IP
        # allow 1.2.3.4;
        # deny all;
        }

        location /Telegramldkfjoiertjnvsfkjg984578kdjfg/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root /usr/abills/cgi-bin/;
               allow all;
        }

        location ^~ /img/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                alias /usr/abills/cgi-bin/img/;
                location ~* \.(ico|jpg|gif|png|css|js|JPG|GIF)$ {
        allow all;
        }
        deny all;
        }

        location ^~ /images/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                alias /usr/abills/ACP/templates/;
                location ~* \.(jpg|gif|png|css|js|JPG|GIF)$ {
        allow all;
      }
        deny all;
    }
}

server {  
    listen lk.it39.su:9442 default_server ssl;
    access_log /var/log/nginx/abills_paysys/access.log;
    error_log /var/log/nginx/abills_paysys/error.log;   
    autoindex off;
    server_name "lk.it39.su";
    root "/usr/abills/cgi-bin";

#    ssl_certificate /etc/letsencrypt/live/lk.it39.su/fullchain.pem;
#    ssl_certificate_key /etc/letsencrypt/live/lk.it39.su/privkey.pem;
#    ssl_trusted_certificate /etc/letsencrypt/live/lk.it39.su/chain.pem;
#    limit_req zone=peripreq_paysys burst=10 nodelay;

    ssl_certificate       /usr/abills/Certs/server.crt;
    ssl_certificate_key   /usr/abills/Certs/server.key;
  
        location / {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                root "/usr/abills/cgi-bin/";
                index paysys_check.cgi;

                        if ( $request_method ~ ^(GET|HEAD)$ ) {
                                return 403;
                        }
        }
    
        location ~* \.cgi$ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                fastcgi_param REMOTE_ADDR $http_x_real_ip;
                fastcgi_pass unix:/var/run/fcgiwrap.socket;
                fastcgi_index index.cgi;
                fastcgi_read_timeout 360;
                include fastcgi_params;
        }
    
        location /admin/ {
                add_header Content-Security-Policy "script-src 'self' 'unsafe-inline'";
                return 301 "https://lk.it39.su/";
        }
                
}

Генерируем сертификаты для АСР Казна-39 в папку /usr/abills/Certs/

Устанавливаем CertBot, для использования сертификатов LetsEncrypt

Обязательно!!! Включаем в config.pl параметр - $conf{API_NGINX}=1;

Перезапускаем nginx:

service nginx restart

Все должно работать.

Настройки безопасности.

https://habr.com/ru/articles/757332/