Monthly Archives: April 2014

Linux IPSec Site-to-Site VPN: AWS VPC & Mikrotik Router

In this tutorial, we will use the Site-to-Site VPN scenario with the modification and one of the customer site that is using Mikrotik router, which is also acting as gateway for LAN plus the vpn gateway while from the AWS side, we are using the exact same Ubuntu Linux router.

Please review the previous tutorial before starting this tutorial, as I’ll use the previous tutorial as the base for this one.

mikto

Note: Please don’t waste your time in hacking, all these public devices and IP(s) are Temporary, I have destroyed them after finished this tutorial.

VPN Configuration on Mikrotik Site:

Open the IP->IPsec window in WinBox:

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Site-to-Site VPN between AWS VPC and Customer Site using Linux

In this tutorial, we will use the previous scenario on AWS side for the creation of site-to-site vpn between AWS VPC and Local site. On Amazon side, we’ll use Ubuntu 14.04 LTS, which will act as gateway for private subnet(s) plus the vpn gateway, while on the Local site, we’ll use the CentOS 6.5, which will perform the same tasks as of Ubuntu on AWS side (gateway for LAN plus vpn gateway).

modify vpc

Note: Please don’t waste your time in hacking, all these public devices and IP(s) are Temporary, I have destroyed them after finished this tutorial.

VPN Configuration on AWS VPC: Read more of this post

Add a Custom NAT instance in AWS VPC

In this tutorial, I am assuming that you have already created VPC with Public and Private subnets

modify vpc

In the above scenario, we’ll create a micro instance inside the public subnet with an IP 10.100.10.0/24, which will act as the gateway for all the instance(s) inside the private subnet (10.100.20.0/24).

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