@Clive_A I'm happy to report that this was in fact the issue: NAT was still turned on at the modem level. I am now able to get to the ER605 via the public IP. Thanks again!

Hey there @Clive_A, thanks for the response! I am away from the home network for the next few days, but I can adjust some settings when I return. In the WAN status, it shows a private IP from my ISP...

Hello! I am having difficulties setting up, and connecting to, a L2TP VPN on my ER605 in Standalone mode. My goal is to simply access my home network from the internet. I have gone through the setup...