Can I test my development and test websites, or do they need to be publicly accessible?

Both our interactive live tests and the automated screenshot tests can work with your internal development and test web servers, even if they are behind a protective firewall.

From the test center tab, click on the 'Setup Local Connection' button. This will allow you to access web servers behind your firewall or static html files located on your local machine. See the two faqs below for more information:

How does the 'Local HTML files' local connection option work?
How does the 'Internal Web Site' local connection option work?

Alternative method - allow access through your firewall:
To do this, modify your firewall to allow incoming http (and https if needed) requests from 216.37.72.238 (crossbrowsertesting.com). Incoming connections should be directed to a particular internal dev or test server. You can filter on CrossBrowserTesting's ip address so only traffic from our testing service can access these internal web servers. This works with both our screenshot system and the live testing. The configuration changes to the firewall are pretty trivial.