I need to know if it is possible to Nat out 2 interfaces on a 831 with Split tunneling using same lan space. I have hundreds of branch offices that need one to one nat via tunnel (unique space in tunnel, same space on lan of each branch, they do not want to renumber). I will have a lan, wan and tunnel interface. I need to have one to one mappings from unique space from tunnel to get to workstations on lan for support of workstations. BUT, I also need to allow all lan workstations to get to internet via default gateway via nat. Can this be done?