I'm looking at installing a Linksys RV042 router at my house and then setup a VPN tunnel to my office which has a Watchguard XTM 23 firewall/vpn. I'm doing this mainly because I need to install an IP phone at the house which connects to the office pbx - i know there are softphones that can do this but I want to use an IP phone.
I also need the home office network setup in such a way so that only the IP phone and a dedicated workstation has access to the VPN tunnel and other family computers at the house should not have access to the VPN tunnel.
What is the best way to accomplish this? Can I restrict access to the VPN tunnel based on MAC addresses with the RV042?
I have managed to setup the RV042 so that the tunnel comes up but i'm not sure how to restrict access to the tunnel.