Thanks to everyone who replied. Nobody actually directly answered the question that I posed of having actually used this router and/or having some experience with it. Thus, I'll take that as a collective "no". Several replies mentioned looking at the FCC Part 15 submissiion and one person was kind enough to supply a link to that document. The user manual in that document was pretty sparse and not even as good as the docs that came with the router. The rest of the replies came down to bypassing the router completely and either a) building my own firewall, or b) obtaining some other piece of equipment to do the same. My previous router from Verizon *did* support Proto 4 forwarding. I was hoping that this new one would do the same and permit me to do a simple plug and play swap. Apparently, this is not the case. Thus, I am down to choosing either a) or b). If I choose version a), I will have to become an iptables expert, which I am not. I am more knowledgeable about the telephony voip side of things, not detailed routing or filtering. If I choose selection b), I will now have to spend some $$$ for a piece of equipment that I previously did not need and which is now included in the service. No more month-to-month billing. As far as being an expert in iptables, there are at least 3 different approaches that I found on the Internet all building some sort of AMPRnet firewall. All of them take a different approach and some actually have errors in their command syntax. At the end of the day, I am more interested in providing services than learning the finer details of filtering. For me, the end-game is not mastering routing but to do things with the bandwidth and ip address space that I have. 73, Mark, N2MH On 7/18/22 3:16 PM, Mark Herson, N2MH wrote: