I have a Windows Server allowing TLS 1.0, 1.1 and 1.2 protocol.
Is there any way to find out what TLS version is used by clients on the established connections? something similar as we have to get samba version for connections with Get-SmbConnection?
Related
I am trying to build a code to check the TLS version of the servers. We have some servers whose TLS version are using v1.0 as a minimum requirement but those can still negotiate with v1.2.
I am trying to check which are all our servers who still negotiate with v1.0
I have java app deployed to tomcat server 8.5.32.
I configured the server to use only TLS 1.2 so if the user send a request to the app(tomcat server) using browser and the browser is old(supports only TLS 1.0 and TLS 1.1) then i want to know that someone tries to reach my app but no handshake is made and I want to make a record in DB.
Is there any way I can know that client is using TLS version that my server is not supporting it and somehow get that info what is the TLS version of the client? OR at least to know that client is using older TLS version?
Payment is requesting all traffic we sent to them be TLS 1.2, they are complaining now that we’re using TSL 1.0. For this
The first thing i did was, I have created a Windows 2012 R2 EC2 instance. In the regitry I have added the following under
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SecurityProviders\SCHANNEL:
In protocols,
I have created the keys along with Dword,
SSL 2.0 (Client (disabled) server(Enabled),
SSL 3.0 (Client (disabled) server(Enabled),
TLS 1.1 (client (disabled)-server(Enabled)),
TLS 1.2 (client (Enabled)- server(Enabled))
After doing this, I restarted the server. Once i restarted, the RDP could able to connect to the server after making the changes. ( I stucked up here)
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Assuming you are using .NET, you'll need to tell it to use the settings in SCHANNEL. Depending on your .NET version, it'll be something like:
[HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft.NETFramework\v2.0.50727] "SystemDefaultTlsVersions"=dword:00000001
[HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432Node\Microsoft.NETFramework\v2.0.50727] "SystemDefaultTlsVersions"=dword:00000001
Alternatively, you could also use the "SchUseStrongCrypto" key or hard-code the values in ServicePointManager.SecurityProtocol.
Additional info:
https://support.microsoft.com/en-us/kb/3135244
https://blogs.msdn.microsoft.com/dataaccesstechnologies/2016/07/12/enable-tls-1-2-protocol-for-reporting-services-with-custom-net-application/#comment-3335
I have a .NET application that uses the Background Intelligent Transfer service to upload files from a client Windows 7 X64 machine to a Windows 2012 R2 server. The server is locked down for TLS 1.2 for compliance with PCI 3.1, i.e. protocols SSL 2.0/3.0, TLS 1.0/1.1 have been explicitly disabled in the reigstry using IISCrypto and TLS 1.2 enabled. The client has a trusted Root CA certificate for the server installed on it.
The application uses the IBackgroundCopyManager and IBackgroundCopyJob COM interfaces to create the job and add it to the queue. In the Bits-Client event log, I see the following warning after it has started the the transfer (note that addresses and filenames are for illustrative purposes only):
BITS stopped transferring the test.tmp transfer job that is associated with the https://server/folder/temp.tmp URL. The status code is 0x80072EFE
The error code translates to:
ERROR_WINHTTP_CONNECTION_ERROR
12030
The connection with the server has been reset or terminated, or an incompatible SSL protocol was encountered. For example, WinHTTP version 5.1 does not support SSL2 unless the client specifically enables it.
This makes sense, as I can see in Wireshark that the BITS request is only ever trying to use TLS 1.0 in the handshake protocol with the server and this has been disabled.
My question is therefore: is it possible to enable the use of TLS 1.2 by the Bits-Client and if so, how is it done?
The COM interface does not provide any methods to set the protocol used and I cannot see anything in the registry settings for the BITS service either. It is definitely not a certificate issue as the transfers work as soon as TLS 1.0 is enabled on the server.
BITS goes over WinHTTP and uses the default WINHTTP_OPTION_SECURE_PROTOCOLS. The problem is that your client is running Windows 7. From MSDN:
By default only SSL3 and TLS1 are enabled in Windows 7 and Windows 8. By default only SSL3, TLS1.0, TLS1.1, and TLS1.2 are enabled in Windows 8.1 and Windows 10
See this support article for instructions on how to enable TLS 1.1 and TLS 1.2 on Windows 7 machines: https://support.microsoft.com/en-us/help/3140245/update-to-enable-tls-1-1-and-tls-1-2-as-a-default-secure-protocols-in
Our production server is running on Windows Server 2008 and currently has SSL 2.0 enabled. We are looking to migrate to TLS 1.0 protocol, we did find some help online as how to disable SSL and enable TLS 1.0 in the registry. We have various LIVE applications configured in our IIS and we would like to test this migration per application basis. I assume enabling TLS in the registry would affect all the applications in the Application Pool. My question is, is there a way to disable SSL and enable TLS for a single application, test it and then propagate it to all the applications?