...it's really funny now, absolutely no firewall now, clean install, tried with explorer, chrome, firefox, changed port, no way
always the same page:
"""
Internet Explorer cannot display the webpage
Most likely causes:
You are not connected to the Internet.
The website is encountering problems.
There might be a typing error in the address.
"""
What can it be? Apex setting are ok, web server enable ok, port 12345... it's really strange. :(