Model Name : Vigor2925n+
Firmware Version : 3.7.3.2

Can anyone explain me how this can be done:

I have a lan-2-lan vpn up and running.
But now my customer is asking me to restrict this connection and let i work only 1 way.

so ip range:
Site A= 192.168.5.0/255.255.255.0
Site B= 192.168.1.0/255.255.255.0

Site A should be able to acces everything on site B , but site B may NOT acces site A.
How can this be done?

Thx four your advice!