ZIWO requires the access to certain URL and Links to work properly :
- https://cdnjs.cloudflare.com/
ajax/libs/animate.css/3.5.2/ animate.min.css  - https://cdnjs.cloudflare.com/
ajax/libs/socket.io/1.4.5/ socket.io.min.js  - https://cdn.rawgit.com/
zenorocha/clipboard.js/master/ dist/clipboard.min.js  - https://fonts.googleapis.com/
css?family=Roboto:100,100i, 300,300i,400,400i,500,500i, 700,700i,900,900i  - https://fonts.googleapis.com/
icon?family=Material+Icons  - https://fonts.gstatic.com/s/
 - https://www.gstatic.com/
charts/  
The last 2 ones are directories, because several ressources of these are used. Here's the detailed list :
- https://fonts.gstatic.com/s/
materialicons/v19/ 2fcrYFNaTjcS6g4U3t- Y5UEw0lE80llgEseQY3FEmqw.woff2  - https://fonts.gstatic.com/s/
roboto/v15/ RxZJdnzeo3R5zSexge8UUZBw1xU1rK ptJj_0jans920.woff2  - https://fonts.gstatic.com/s/
roboto/v15/d- 6IYplOFocCacKzxwXSOJBw1xU1rKpt Jj_0jans920.woff2  - https://fonts.gstatic.com/s/
roboto/v15/ oMMgfZMQthOryQo9n22dcuvvDin1pK 8aKteLpeZ5c0A.woff2  - https://www.gstatic.com/
charts/45.1/css/core/tooltip. css  - https://www.gstatic.com/
charts/45.1/css/table/table. css  - https://www.gstatic.com/
charts/45.1/css/util/format. css  - https://www.gstatic.com/
charts/45.1/css/util/util.css  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ corechart_module.js  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ default_module.js  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ format_module.js  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ gauge_module.js  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ table_module.js  - https://www.gstatic.com/
charts/45.1/js/jsapi_compiled_ ui_module.js  - https://www.gstatic.com/
charts/45.1/loader.js  - https://www.gstatic.com/
charts/loader.js