Francois Lascelles

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Top Stories by Francois Lascelles

I often get asked about ‘REST to SOAP’ transformation use cases these days. Using an SOA gateway like SecureSpan to perform this type of transformation at runtime is trivial to setup. With SecureSpan in front of any existing web service (in the DMZ for example), you can virtualize a REST version of this same service. Using an example, here is a description of the steps to perform this conversion. Imagine the geoloc web service for recording geographical locations. It has two methods, one for setting a location and one for getting a location. See below what this would look like in SOAP. Request: 34802398402 more)

JSON Schema Validation for RESTful Web Services

In the article "The importance of threat protection for restful web services", I presented a number of content-based threats for XML. When protecting an endpoint from XML based attacks, not only are payloads scanned for code injections, malicious entity declarations and parser attacks, XML documents are actually validated against strict schemas that clearly describe expected document structures. Enforcing this type of compliance at the edge, in a SOA gateway for example, minimizes the risk of attacks of the Web service endpoint. Structure definition languages such as XML Schema ... (more)

Agile, Decoupled Security for Better Service Orientation

Service orientation is about agility. Without a resulting agility, there is no point of doing SOA. Unfortunately, enterprise SOA infrastructure initiatives sometimes fail in part because its security mechanisms and processes demolish any agility that was built into the SOA itself. This happens when security is an afterthought. Simple barriers are good for security but they can easily become preventers of agility. When security fails to maintain agility, one of following two possible consequences seems to emerge. The first is a failure of the corporate SOA initiative – without ag... (more)

API Management – Infrastructure vs SaaS

The Enterprise is buzzing with API initiatives these days. APIs not only serve mobile applications, they are increasingly redefining how the enterprise does B2B and integration in general. API management as a category follows different models. On one hand, certain technology vendors offer specialized infrastructure to handle the many aspects of API management. On the other, an increasing number of SaaS vendors offer a service which you subscribe to, providing a pre-installed, hosted, basic API management system. Hybrid models are emerging, but that’s a topic for a future post. B... (more)

Give me a JWT, I’ll give you an Access Token

One of the common misconceptions about OAuth is that it provides identity federation by itself. Although supporting OAuth with federated identities is a valid pattern and is essential to many API providers, it does require the combination of OAuth with an additional federated authentication mechanism. Note that I’m not talking about leveraging OAuth for federation (that’s OpenID Connect), but rather, an OAuth handshake in which the OAuth Authorization Server (AS) federates the authentication of the user. There are different ways to federate the authentication of an end user as p... (more)