Dial-in VPN setting in RB450G

Hello,

I have routerboard 450G at a central office with a Public Static IP Address and vigor 2912 / vigor 2925 router with PPPOE internet in branches. I would like to create a dial-out VPN from branches to central office. Pls suggest if its possible in Routerboard and how do configure Dial-in setting in RB450G.

nts007