How to Secure Nginx WeB-Server From HACKERs | Tip

• How to Hide Nginx Server Version in Linux?
• Disable server_tokens directive in NGINX?
• Is it possible to change server_tokens?

In this short article, we will show you how hide Nginx server version on error pages and in the “Server HTTP” response header field in Linux. This is one of the key recommended practices in securing your Nginx HTTP and proxy server.

The “server_tokens” directive is responsible for displaying the Nginx version number and Operating system on error pages and in the “Server” HTTP response header field as shown in the following screenshot.

Description:

The server_tokens directive is responsible for displaying the NGINX version number and operating system version on error pages and in the Server HTTP response header field. This information should not be displayed.

Rationale:

Attackers can conduct reconnaissance on a website using these response headers, then target attacks for specific known vulnerabilities associated with the underlying technologies. Hiding the version will slow down and deter some potential attackers.

Audit:

In the NGINX configuration file nginx.conf, verify the server_tokens directive is set to off. To do this, check the response headers for the server header by issuing this command:

curl -I 127.0.0.1 | grep -i server

Add the following line to http context as shwon in the screen shot below.

server_tokens off;

Note: This will only hide the server version number, but not the server signature (name).

Thankyou! DONE