Thanks @Kaspar this is a workaround that could do it's job.
But:
this requires access to the Web-Server-Settings
on nginx it does not match to `location /`. Instead a `location ~ ^/.*` is used to avoid duplicate locations, what could cause other problems (loosing settings of `location /`)...
It would be nice to have an option to allow specific IPs to bypass the basic auth.
This would be helpful not only for every, by basic auth, protected WordPress site because WordPress needs to connect to it self. In addition there are some external services that need to connect to the site and...
This is a must have feature because we still have customers with Windows XP using IE and others behind a proxy that is not able to handle SNI.
What about Plesk 11.5, I hope there is an option to add multiple ip addresses to one subscription.