You can not access the sites in ISPConfig like this. If you want to access a site before the DNS is changed to the new IP, add the domain to the host file of your windows / mac / linux workstation.
I know that. But I don't want that way. I want a way to access in a simple url and clients cant do my that way neither, editing a file? too advanced
maybe create a global mod_rewrite rule in apache? http://ip/~website to http://website or instead of using the ip: http://website.yourdmain.com and add website.yourdmain.com as ServerAlias to the customer website?
