Secure Integration on Pantheon Doc Update

[titomarifrancis-pantheon]

Re: Secure Development on Pantheon

Priority: Medium

Issue Description:

Clients think we're just using 127.0.0.1 or loopback so some would argue that it's wrong

Suggested Resolution

Provide explanation for the reader that the IP 127.0.0.1 perceived as loopback is actually necessary for the Secure Integration tunnel to function alongside with the PHP constant defined by the client

[github-actions]

👋 @titomarifrancis-pantheon
Thanks for opening your first issue here! @pantheon-systems/docs-admins is excited to review this!

If you like this project, please ⭐star⭐ our repo.

[rachelwhitton]

Is the copy here enough or is it lacking? https://docs.pantheon.io/guides/secure-development/secure-integration#why-does-secure-integration-use-127001-or-loopback-ip-address

we could reposition this information as an Alert further up the page, is that the request here? Any additional info you can provide on the issue and recommended solution would be helpful. Thank you for opening this issue!