Sorry sorry for my silence. i did not work on my project for a time.
i have restarted the web-management process
Find attached my configuration file and the results of log httpd.
I can web manage via the lo0 if i don't specify any interface in system services. If i specify interfaces (fxp0.0, lo0, ge-0/0/0.10), i can access via all interfaces specified except the lo0 and when i check the http log, i never see the lo interface working or not working.
The error message when i specify the interface => when i type the url (https://172.28.128.7) i have the warning message about the certificate since it is self generated and when i accept, the next page is "sorry we can access the page".
Because i'm not coming from the same subnet as my target interface, i have to open also web-management to the interface i'm coming from. Is it right? Anyway, that's how it works for me. If right, then i have to block management traffic towards the unwanted interface with firewall filter, right?