AZ Environment Variables
Request environment
Frequently asked questions
What is this page for?
It echoes back the request headers your connection sent, the same variables a web server sees. Proxy and VPN users check it to see what their setup reveals.
What is REMOTE_ADDR?
The IP address the request arrived from. Behind a proxy or VPN it should be the proxy's address, not yours. If your real IP shows up here, something is leaking.
What is X-Forwarded-For?
A header that proxies add to carry the original visitor's IP. A transparent proxy leaves it in place, which can expose the address you meant to hide. A properly configured anonymous proxy removes or replaces it.
How do I tell whether my proxy is anonymous?
Compare these values to your real IP. If REMOTE_ADDR is the proxy and no header carries your own address, the proxy is hiding you. If your IP appears in any field, it is not.
Why are some values shown as [redacted]?
Headers that can carry credentials, such as cookies and authorization tokens, are never echoed back, even to you, so a screenshot or a proxy in the middle cannot capture them.