Mike Lieberman <[email protected]> wrote: > The newer router blocks my local BIND servers (ONLY not clients using > downstream servers) from receiving anything from the Internet. OUR BIND > servers still have the local networks, but nothing else.
Your explanation is rather obtuse, but I think you mean that your BIND
servers can not do recursive lookups. Rather than receive/answer
authoritative queries.
Do your queries originate from port-53? That is not the default anymore, AFAIK.
> The question I need resolved by the proper group/forum is: What port or
> technology is doing the blocking? The ISP has no idea.
No, the ISP probably has no idea. Might even be their FTTH ONT system.
> I have tried three of the new routers but all blocked my servers. I
> tried a replacement EoL router and that works. Without changing
> anything on the network, other than the physical router, it was like
> flipping a switch.
I assume it's a GPON, and therefore you can't easily tcpdump on the outside
like you can with a plan PPPoE with VDSL.
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