NGINX / FPM basic DDOS protection

[VinnyT]

I am trying to integrate basic DDOS protection through the NGINX rules. I am using the following two URLs

These are example settings from this blog post: http://www.codestance.com/tutorials-archive/nginx-tuning-for-best-performance-255

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# if the request body size is more than the buffer size, then the entire (or partial) request body is written into a temporary file
client_body_buffer_size 128k;

# headerbuffer size for the request header from client, its set for testing purpose
client_header_buffer_size 3m;

# maximum number and size of buffers for large headers to read from client request
large_client_header_buffers 4 256k;

# read timeout for the request body from client, its set for testing purpose
client_body_timeout 3m;

# how long to wait for the client to send a request header, its set for testing purpose
client_header_timeout 3m;

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Based on how Plesk works with VHOSTS and NGINX conf files, I am not sure where to put these settings. Should i modify the nginx vhost template at
/usr/local/psa/admin/conf/templates/default/domain/nginxDomainVirtualHost.php ?

Thanks