I want to use a Linksys WRT54G as a backup for a Cisco 1841 router. It seems to me in truth that there should be enough power to do the job. I have a couple concerns. Firstly we do not want NAT on the connection. We have a NAT device later on in the network and therefore I need to disable NAT. Can I do this using Tomato (is that what Router instead of gateway mode is). I can strip the machine down pretty good no wireless, no QoS etc to free up resources. How many sessions can I set it to handle? As well what changes should I probably make on the conntrack page? Thanks for all your help.