VPN Server not working on AWS

[xodc]

I'm running SoftEther on my home computer and after some basic configuration (Server 2012 R2, ports forwarded to server), everything works. I am able to use my computer as an L2TP server.

I tried replicating this exact setup on AWS (also Server 2012 R2). In the security group settings, I allowed the same ports as I had at home (1701, 4500, 500). I tried disabling the firewall as well.

However, every time I try to connect to the VPN, I get the following error: "A connection could not be established to the PPP Server."

Two Questions:

Am I correct in assuming that this is due to AWS somehow blocking my connections?

How do I remove such blockage?

[yeeler]

Clarify replicating, you created another VPS based on the working snapshot from other VPS. Or you just replicating steps manually? Have you enabled SecureNAT? I fail to connect my VPN without SecureNAT enabled.