> For the complete documentation index, see [llms.txt](https://cortex-docs.paloaltonetworks.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://cortex-docs.paloaltonetworks.com/xsoar-6-administrator-guide/6.14/onboard-cortex-xsoar/proxy/use-nginx-as-a-reverse-proxy-to-the-server.md).

# Use NGINX as a Reverse Proxy to the Server

NGINX can act as a reverse proxy that sits between internal applications and external clients, forwarding client requests to the appropriate application. Using NGINX as a reverse proxy in front of the Cortex XSOAR server enables you to provide network segmentation where the proxy can be put on a public subnet (DMZ) while the Cortex XSOAR server can be on a private subnet, only accepting traffic from the proxy. Additionally, NGINX provides a number of advanced load balancing and acceleration features that you can utilize.

The following topics describe how to install NGINX, how to use a Self-Signed Certificate for non-production environments, and how to configure NGINX.

* [Install NGINX on the Server](/xsoar-6-administrator-guide/6.14/onboard-cortex-xsoar/proxy/use-nginx-as-a-reverse-proxy-to-the-server.md#install-nginx-on-the-server)
* [Generate a Certificate for NGINX](/xsoar-6-administrator-guide/6.14/onboard-cortex-xsoar/proxy/use-nginx-as-a-reverse-proxy-to-the-server.md#generate-a-certificate-for-nginx)
* [Configure NGINX](/xsoar-6-administrator-guide/6.14/onboard-cortex-xsoar/proxy/use-nginx-as-a-reverse-proxy-to-the-server.md#configure-nginx)

**Use Engines Through the NGINX Reverse Proxy**

If you want to use a Cortex XSOAR Engine (d1) through the reverse proxy, you need to modify the following entry in the `d1.conf` file to point to the host and port the NGINX server is listening on: **`EngineURLs`**

### **Install NGINX on the Server**

You can install NGINX on the Red Hat/Amazon (yum) and Ubuntu Linux distributions. For full instructions and available distributions, see [NGINX documentation](https://docs.nginx.com/nginx/admin-guide/installing-nginx/installing-nginx-open-source/).

1. Run one of the following commands according to your Linux system:
   * **RedHat/Amazon**: **`sudo yum install nginx`**
   * **Ubuntu**: **`sudo apt-get install nginx`**
2. (Optional) Verify the NGINX installation by running the following command:

   **`sudo nginx -v`**

### **Generate a Certificate for NGINX**

You should not use self-signed certificates for production systems. It is recommended to use a properly signed certificate for production systems. These instructions are intended only for non-production setups.

1. To use OpenSSL to generate a self-signed certificate, run the following command:

   **`sudo openssl req -x509 -nodes -days 3650 -newkey rsa:2048 -keyout /etc/nginx/cert.key -out /etc/nginx/cert.crt`**
2. When prompted, complete the on-screen instructions for the required fields.

### **Configure NGINX**

Follow these instructions to configure NGINX on Cortex XSOAR.

{% hint style="info" %}

### Note

For multi-tenant deployments, replace **`location ~ ^/(websocket|d1ws|d2ws) {`** with **`location ~ ^/(acc_\S+/|host_\S+/)?(websocket|d1ws|d2ws) {`** in the configuration template below.
{% endhint %}

1. Open the following NGINX configuration file with your preferred editor:

   `/etc/nginx/conf.d/demisto.conf`
2. Use the following configuration template:

   Replace **`DEMISTO_SERVER`** with the appropriate hostname.

   ```programlisting
   # Replace DEMISTO_SERVER with the appropriate hostname. If needed, change port 443 to the port on which the Demisto server is listening.

   upstream demisto {
       server DEMISTO_SERVER:443;
   }

   # Uncomment to redirect http to https (optional)
   # server {
   #     listen 80;
   #     return 301 https://$host$request_uri;
   # }

   server {
      # Change the port if you want NGINX to listen on a different port
       listen 443;
       
       ssl_certificate           /etc/nginx/cert.crt;
       ssl_certificate_key       /etc/nginx/cert.key;

       ssl on;
       ssl_session_cache  builtin:1000  shared:SSL:10m;
       ssl_protocols  TLSv1 TLSv1.1 TLSv1.2;
       ssl_ciphers HIGH:!aNULL:!eNULL:!EXPORT:!CAMELLIA:!DES:!MD5:!PSK:!RC4;
       ssl_prefer_server_ciphers on;

       access_log            /var/log/nginx/demisto.access.log;

       location / {

         proxy_set_header        Host $host;
         proxy_set_header        X-Real-IP $remote_addr;
         proxy_set_header        X-Forwarded-For $proxy_add_x_forwarded_for;
         proxy_set_header        X-Forwarded-Proto $scheme;

         proxy_pass          https://demisto;
         proxy_read_timeout  90;
       }

       location ~ ^/(websocket|d1ws|d2ws) {
           proxy_pass https://demisto;
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection "upgrade";
           proxy_set_header Host $host;
           proxy_set_header Origin "";
           proxy_set_header X-Real-IP $remote_addr;
           proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
           proxy_set_header X-Forwarded-Proto $scheme;
       }
   }
   ```
3. Restart the NGINX server, by typing the following command:

   **`sudo service nginx restart`**
4. Verify you can access Cortex XSOAR by browsing to the NGINX server host.


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