How To Enable Tls In Wcf Service

NOTE : Security is a very serious topic and y'all should e'er engage an IT security practiced earlier deploying an application that needs to be secure. This article is intended to share my experience versus being an article to use as a guideline.

With all the news well-nigh the different vulnerabilities similar heartbleed and poodle, developers and companies akin are taking an extra difficult await at the protocols, hashes, cyphers and encryption engineering they have implemented in their environs. Rightly so.

Ane thing I found was that when I was testing a WCF telephone call to one of my examination Azure Websites, the zilch suite which the client and server were agreeing on was TLS one.0 and TLS_RSA_WITH_RC4_128_SHA, every bit shown in the Network Monitor trace, Figure i.

Figure 1, WCF using TLS 1.0 instead of TLS 1.2

I ostend the agreed upon Nothing Suite past looking into the Server Hullo message within the Network Monitor trace shown in Effigy two.

Figure ii, WCF TLS 1.0 agreed on TLS_RSA_WITH_RC4_128_SHA instead of 1.two

Equally per this article, Zilch TLS_RSA_WITH_RC4_128_SHA does support TLS ane.ii. And then why did information technology not use TLS i.ii?

Before I answer that question, when I used a browser like Internet Explorer eleven, which was configured to support TLS 1.2 and accessed the same WCF service, I am indeed using TLS ane.2, equally per Effigy 3.

Figure 3, TLS 1.2 is supported on Azure Websites, based on my findings

The manner I ultimately got my WCF client to use TLS ane.2 is by installing this hotfix, and you lot must utilise .NET Framework iv.five, please right me if I am wrong, see below links…

I am non function of the development team nor exercise I have access to much of the data they employ to determine what gets included or not in the framework, merely it seems that the inclusion of TLS 1.2 into WCF is an opt-in determination. You lot opt-in to using TLS 1.2 past knowingly installing the hotfix.

Some additional articles in context:

How to Decide the Null Suite for the Server and Client
SslProtocols Enumeration .Net Framework 4.5 – notice TLS 1.ii
SslProtocols Enumeration .Cyberspace Framework 4 – notice no TLS 1.two or 1.1

UPDATE : Check out a registry setting every bit well.

Nether following keys for all the version key listed like V1.0, V2.0.50727,v3,v4.0.30319. Create fundamental SchUseStrongCrypto(type dword, value 1)

HKLM\software\Wow6432Node\Microsoft.NETFramework HKLM\software\microsoft,NETFramework\

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