Varnish vcl configuration for wordpress and xenforo caching

Hi I have installed Varnish on my apache server, after installation I tested my site using isvarnishworking.com and see Age showing 0 and varnish not working properly.

isvarnishworking.com report

HTTP/1.1 200 OK
Date: Thu, 01 Sep 2016 15:14:09 GMT
Content-Type: text/html; charset=UTF-8
Connection: keep-alive
Set-Cookie: __cfduid=dc9efdbc45d351b68ed70201ad4e7e19e1472742846; expires=Fri, 01-Sep-17 15:14:06 GMT; path=/; domain=.example.net; HttpOnly
Vary: Accept-Encoding,User-Agent
X-Powered-By: PHP/5.5.9-1ubuntu4.14
Cache-Control: max-age=3600
Expires: Thu, 01 Sep 2016 16:15:56 GMT
X-Varnish: 4594927
Age: 0
Via: 1.1 varnish-v4
Server: cloudflare-nginx
CF-RAY: 2db9ab8903c51864-EWR
Content-Encoding: gzip

Code (markup):

My default vlc file is like this

vcl 4.0;


backend default {
.host = "127.0.0.1";
.port = "8080";
}

sub vcl_recv {
if (req.method == "PURGE") {
return (purge);
}
}

sub vcl_backend_response {
if (bereq.url ~ "\.(png|gif|jpg|swf|css|js)$") {
unset beresp.http.set-cookie;
set beresp.http.cache-control = "max-age = 2592000";
}
}

sub vcl_deliver {

}

Code (markup):

Please help me what settings I have to use for proper caching, on this server I have one Wordpress and one Xenforo site.