[usergroup=*]
config >
config.additionalHeaders = Location: http://{$config.domain}
page >
page = PAGE
page.10 = TEXT
page.10.value=No Access!
[global]

v8.7+

config.additionalHeaders.10 {
  header = Location: https://www.example.de/login/
}
https://docs.typo3.org/typo3cms/TyposcriptReference/Setup/Config/Index.html#additionalheaders