The LAN-to-LAN VPN means connecting two sites with a VPN tunnel. Assume you have two companies, one is the HQ and the other is the branch, now you want the traffic between the two sites go through...

Hope the new product will solve your problem.

So, what is the result?

and what is the system log? is there anything wrong with the log?

no no, the R470T+ has no IPsec VPN function, so I think your purpose is to set up the VPN between the remote client and the mac os x server, is that right? so your topology is ISP--adsl router(NAT)...

Just one question to comfirm: does your modem router ICOTERA IGW3000 supports PPTP/L2TP VPN passthrough function? In my opinion, your problem is not caused by the port opening but the VPN passthrough...