I have just got a RB750 and it is setup pretty much with default setting. Ether1(wan 192.168.1.3) connected to a tplink adsl modem/router. A pc (192.168.1.2) is also connected to the tplink.
Ether 2 of the 750 is connected to a gigaset IP phone (18.104.22.168) and a laptop (22.214.171.124) connected to ether3.
I know this is double natting voip but it all works ok .
The trouble is when I try to use the 192.168.1.2 pc to check the gigaset GUI 192.168.88.251 it times out. I can ping ok but not connect.
Have tried static route ,dst nat ,firewall rules (disabled the drop rule) added an accept rule but all without success and I am looking for a few pointers to how to achieve going backwards through nat (wan to lan ) without a prior connection from the lan out.
This is not a setup I will end up with but I am trying various setups as a way of learning the router commands.So far I have had pppoe setup and working but am stuck in achieving this especially as it seems, and probably is, very simple.