Secure Connection from LAMP to IIS Web API

Question

I already have an existing LAMP application. I am going to integrate a 3rd part API which uses C#, so I'm planning to create a Web API for them to be connected. No other website will connect to the web API other than the LAMP app. How do I make a secure connection from my LAMP app to the web API? Thanks.

Answer 1

If it is just API calls and nothing dealing with interfaces you can use Encrypted WebSockets or create your Authorization headers... which could be a bit of work and would only work between the those two applications.

The most secure way to lock them up is a combination of a secure HTTP request (HTTPS) coupled with a Client Certificate.

All of these things are quite a tall order; you're best bet is to just get/create a half-way decent SSL certificate and use BASIC authentication. Your authorization headers will be encrypted. Even a self-signed certificate would work; make sure to research on how to make a self-signed certificate the most secure it can be. Also your LAMP server will likely make use of cURL to send the requests to the C# server, you'll want to make use of the curl -k option if you're going to be using a self-signed cert.