With Cypress, you can easily create tests for your modern web applications, debug them visually, and automatically run them in your continuous integration builds.

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Here's a list of the URLs that will need to be added to your VPN: https://docs.cypress.io/guides/references/troubleshooting#Allow-Cypress-URLs-on-VPNs
Also, If your proxy does not allow the https://download.cypress.io domain, you could install the binary to help circumvent the firewall by setting `CYPRESS_BINARY_VERSION=/some/path/to/cypress.zip` as an env var: https://docs.cypress.io/guides/references/advanced-installation#Install-binary