I'm currently developing an e-commerce website, and I need to setup a VPN between the dedicated web server and a remote server that control the stocks, the product list, etc, and that is located in my client infrastructure.
Their technical constraints are that the VPN has to be an IPSec, network-to-network, using a shared secret (and not a certificate based authentification). They have given me their public gateway ip, and the local private ip of the stock/product server.
As any developpers, I've notions on this kind of subject, and I looked around, searching for tutorials, but I think I'm overwhelmed.
Most tutorials I found pointed that I needed to configure the web server's gateway, in oder to generate certificate. However, as the web server is a dedicated one, I don't know how to access the gateway.
Truly, I'm a bit lost, like a tiny developper in the sea of network/server management. So please, help !
So, can someone explain me how to setup this kind of VPN, and what I'll need to give to my client's network admins, thus saving my life.