Nginx

Nginx advertises its version in the Server header of responses. The version can be removed completely. As covered in the Version banners may not be precise section, this could lead to false positives from network vulnerability management scanners.

Disabling the version advertised by nginx can be achieved with the server_tokens directive:

echo "server_tokens off;" | sudo tee /etc/nginx/conf.d/no-banner.conf
sudo systemctl reload nginx.service