I've been running an old Cisco 678 Router between my ISP and my Small Business Server 2003 for a long time. Both the 678 and SBS are running NAT so my network is "double natted". However, we'll be moving soon and probably going to a wireless connection instead of DSL. To make a long story short, I've grown comfortable with having the double nat so I was wondering if I could stick a WRT54GL router running Tomato between the wireless modem and the SBS server? The reason I'm asking is on the Cisco 678 I had to forward protocol 47 (or GRE) to the IP address of the server in order for PPTP/VPN to work and I don't see this option in the Tomato interface? Thanks!