[Q] Setting up port forwarding on Asustor

ricostuartricostuart
in Other Devices VPN Setup
Hi all,

So I have just setup VPN access on my Asustor NAS using PPTP. All seems to be working. However, if I am using the VPN, I cannot access the unit via ftp, etc using DDNS. What I was hoping is that someone can help me open some ports to allow me access as needed when not on my lan. Unfortunately I am using a TPLink VR900 so I cannot setup that for the VPN. 

Can anyone help? 

Thanks!

Comments

  • Max-PMax-P
    I unfortunately don't really know the answer for your specific use case, but hopefully that will give you enough to figure it out!

    Basically what happens when you are connected to the VPN, despite receiving a connection request from your non-VPN connection, because the network is stateless and uses a routing table to know how to route back packets, you end up responding to the connection request through the VPN which is not where it comes from.

    What you need to do is ensure that your FTP server never replies to the VPN. If you can control which address it binds on, having it bind specifically to your LAN IP should force it to reply back through your router because it would be unable to reply from the VPN IP.
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