authentik/website/docs/outposts/proxy.md

title
Proxy Outpost

The proxy outpost sets the following headers:

X-Auth-Username: akadmin # The username of the currently logged in user
X-Forwarded-Email: root@localhost # The email address of the currently logged in user
X-Forwarded-Preferred-Username: akadmin  # The username of the currently logged in user
X-Forwarded-User: 900347b8a29876b45ca6f75722635ecfedf0e931c6022e3a29a8aa13fb5516fb # The hashed identifier of the currently logged in user.

Additionally, you can set additionalHeaders on groups or users to set additional headers.

If you enable Set HTTP-Basic Authentication option, the HTTP Authorization header is being set.