I currently have a cable connection running through our Sonicwall firewall providing WAN access to users. We have a fiber connection coming in shortly which will be used for IP telephony. I would like use our NSA for both connections, but want to make sure it's set up correctly.
Will access rules be enough to keep the connections isolated? IOW, I do not want the existing LAN (cpu's, servers) to be able to connect to the WAN via fiber; nor the VOIP appliances connect to WAN via Cable. Will access rules take care of this, or is it better to set up a VLAN for VOIP?