I have setup a site-to-site VPN with the DPC3825 modem and my Vyatta router.
First trial case with running the VPN directly on the Shaw modem,
I am getting traffic in one direction only, the DPC3825 can access any/all devices on my network, but my network can not communicate with any internal IP on the DPC3825.
Netstat and TCPView indicate that the correct IPs are showing when the remote computers connect to my IPs (not all under 1 NAT'd IP).
My suspicion is that the DPC3825 is rejecting the non-"Established and Related", to prevent new connections from happening.
Has anybody else tried this?