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James,

On 3/13/19 20:38, James H. H. Lampert wrote:
> Thanks, Mr. Schultz.
> 
> I managed to find the IBM docs. At least some of the cipher suites
> the customer is talking about are supported all the way back to
> their 7.0 JVM.
> 
> I've specified cipher suites by name in the connector, but I don't
> think I've done protocols. "TLS," according to the IBM docs,
> "Enables TLS v1.0 protocol (defined in RFC 2246). Accepts TLSv1
> hello encapsulated in an SSLv2 format hello."
> 
> Sounds like I would need to enable TLSv1.1 and TLSv1.2 explicitly.
> Would I change the sslProtocol clause from
>> sslProtocol="TLS"
> 
> to
>> sslProtocol="TLSv1.1,TLSv1.2"
> or even
>> sslProtocol="TLSv1.2"
> 
> and specify acceptable cipher suites in the ciphers clause?

Specifying sslProtocol="TLS" is what you want, regardless of the
actual protocols you want to support. It's ... odd, but you have to
tell Java that you want "TLS" (generically) before you can tell it
what /kind/ of TLS you want. I believe that Java will never accept any
value other than "TLS" for that at this point. So you are left with
sslEnabledProtocols...

If you want to configure specific versions of TLS, this is where to do i
t:

sslEnabledProtocols="TLSv1.2, TLSv1.1, SSLv2Hello" (etc)

If you can tolerate it, I'd enable only TLSv1.2. Some clients still
require TLSv1. Virtually all clients supporting TLSv1.1 also support
TLSv1.2, so it's almost useless to enable TLSv1.1.

- -chris
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