0

I have a very simple home network with a computer and two routers connected in a chain. The first router simply acts as a kind of extension/wired access point and the second router connects to the WAN/internet.

DHCP is enabled on only the WAN router. Normal internet browsing and LAN functions are fine. L2TP passthrough is enabled on both routers, and I'm forwarding UDP ports 500, 1701 and 4500.

The problem is, no matter what combination of port forwarding I try, I'm unable to connect to a L2TP VPN when I'm using both routers. When I use only one router, I can connect fine.

The diagram below shows what combinations I've tried. What can I do to resolve this?

diagrams

Improve this question

1 Answer 1

Reset to default
1

The solution was to disable NAT on router #1. From this reddit post.

Improve this answer
2
  • That's usually the default solution whenever stacked consumer routers are involved.
    – grawity_u1686
    Commented May 9, 2016 at 14:02
  • 1
    @grawity: Why? How does NAT in this kind of chain affect the traffic, especially if it has an explicit forwarding address?
    – WackGet
    Commented May 10, 2016 at 0:27

You must log in to answer this question.

Not the answer you're looking for? Browse other questions tagged .