TomatoUSB

Hello all, and TIA for any advice.

I've read this HOWTO on doing isolated subnets with Tomato: tomatousb dot org slash tut:two-isolated-separate-lan-subnets

I want to do this, plus a DMZ box that both subnets can access (that's lower priority - just for us to have a single music and backup server). I will be sharing internet with neighbors and we have already got the wireless backhaul going between our houses. Here are my concerns though.

• My WRT54G (v3) running Tomato is pretty much perfectly configured for QoS and everything and almost never has a problem. If I need to upgrade firmware, or if I mess it up and have to wipe it, I will be sad because of all the cumulative work done on it to make it work really well. If I brick it, I do have a "cold spare" WRT54G (v2), but the same concern applies. How likely is following this HOWTO to mess up my router? There are differences between the HOWTO and mine, e.g. nvram show | grep vlan.ports shows vlan1ports=4 3 2 1 5* / vlan2ports=0 5 instead of vlan1ports=4 3 2 1 8* / vlan2ports=0 8. I'm pretty sure I can just sub '5' for '8' and so on, and I DO have decades of Linux sysadmin experience, but routing, and embedded router distros - not so much.
• Anybody got a handy reference for setting up a single shared server between the two isolated subnets?

Thanks all for any help, and the devs for all the work done on Tomato - it's a testament to software ingenuity that a device I bought literally ten years ago is still better than most consumer routers on the market, minus the radio which was turned off a while back in favor of an 802.11n WAP.

If you know what the values are before you change them there is little danger that you could not change them back if something does not work how you want it to.