Varnish Change Web Server Signature Headers

To change the web server signature headers in Varnish, you can use the following steps:

1. Edit the Varnish configuration file (usually /etc/varnish/default.vcl) and add the following lines to the top of the file:

sub vcl_deliver {
  set resp.http.Server = "Custom Server Header";
}

This will set the Server header to "Custom Server Header" for all responses delivered by Varnish.

2. Reload the Varnish server to apply the changes by running the following command:

systemctl reload varnish

This will reload the Varnish server and apply the changes you made to the configuration.

From now on, Varnish will use the specified Server header for all responses delivered by the proxy.

Keep in mind that changing the web server signature headers may affect the functionality of certain applications or protocols that rely on the original headers. You should test the proxy server after making the change to make sure that it is still working as expected.

For more information about how to configure web server signature headers in Varnish, you can consult the Varnish documentation or use the man varnish command to see the manual page.