I have a pppoe server on mikrotik, and a radius server for authentication… the pppoe pool on mikrotik is 10.20.10.1 - 10.20.10.254..
the problem is if i go to a Clients place and just insert the static ip address: 10.20.10.5 subnet : 255.255.255.0 , gateway and dns : 10.20.10.1 .. the internet starts to work without even creating a pppoe client or logging in the pppoe server.
Please tell me how do i stop this ?? so that even if a client puts a static ip address he cannot get access to the internet.
What interface on the Mikrotik router has the ip address that serve as the gateway to your clients? If it is the wlan interface to which your clients are connected to, then u need to remove it and assign it to another interface which is not directly connected to your clients.
ether1 = wan = 192.168.1.2/24
ether2 = lan = 10.20.10.1/24 .. gives out ip through pppoe server .. also this is the interface connected to my clients and is the gateway for my clients..
the problem is if a client puts the static ip in his computer 10.20.10.8.. with the subnet and gateway ..he is connected to the internet without logging on to the pppoe server !!!