# matched when no other server name matches
server {
    listen 80 default_server;
    listen [::]:80 default_server;
    # server name must simply something invalid ...
    server_name  _;
    # drop connection, special nginx status code
    return 444;
}
server {
    listen 443 ssl default_server;
    listen [::]:443 ssl default_server;
    include conf.d/talerssl;
    # server name must simply something invalid ...
    server_name  _;
    # drop connection, special nginx status code
    return 444;
}