Setting up VPN with Synology 2411+ DSM 4.0

Introduction

This is by far the easiest vpn setup I've ever done. The interface for DSM4.0 is quite user friendly I would say. In this guide I will show you the setting up of a vpn PPTP service, however openvpn is supported as well. A vpn is widely used for remote connection for the access to some of  the servers which is on the internal LAN and not on the DMZ or a public accessible network. It is also used to connect 2 sites or more known  as a site to site vpn using the Internet which greatly reduce the cost comparing with a direct leased line.

Guide

Click on PackageCenter

Select Available tab

Click Install VPN Server

Answer Yes

Goto Connection settings then select your external interface then apply.  If you have existing user account, just click on  priviledges to enable which user account can access to the vpn service. 

Select PPTP, check Enable PPTP VPN server. 

Check Enable auto block and enable block expiration. When this is done, just forward vpn traffic from your router / firewall the Synology.