So, I've got a WRT54G Ver.6.0 that I used on our external, DSL internet connection we use for testing at work. We have some stand-alone Polycom video conferencing appliances that work fine with stock Linksys firmware but do not connect to our video conferencing backbone appliance (out in the public DMZ) when running DD-WRT V.24 SP1. I tried turning off the SPI and all related firewall settings and also just putting the device in the DMZ on the DD-WRT configuration, to no avail. I'm not doing anything particularly special in DD-WRT...just config'd the internet connection and Wi-Fi network settings and made sure I could connect to the internet and DNS was resolving (although, we're just using a static IP for the video conferencing backbone, so even that shouldn't matter). It should also be said that on a WRT54G Ver.2.0 running Tomato, everything worked fine. As with DD-WRT, I made no unusual settings. Any ideas? Is there some default DD-WRT setting that would prevent this from working?