This Macro should not be used or considered as a security macro.
In the Rich Text Editor (RTE)
This redirects every User to http://www.atlassian.com
This redirectes all that is not member of "sales-users"
In the Layout(s) for Global, Page, Blog post etc..
This redirects all requests to the Start page in the Public Space:
$helper.renderConfluenceMacro("{redirect:Public:Start|0}")
Placed in the Welcome Message:
{redirect:Public:Start|0}