Get 403 on an unrestricted location

Question

Got 403 for this page :

Alias /nconf /usr/local/nconf/
<Directory "/usr/local/nconf">
    Options Indexes
    AllowOverride AuthConfig Options
    Order allow,deny
    Allow from 10.1.1.0/8
</Directory>

My ip is 10.1.1.132 so have to work. Don't know why but my error log don't log any problem. My access log nor. I use virtualhost but this page is on the main, who is defined like :

ErrorLog logs/error_log
CustomLog logs/access_log combined

I don't know what to do...