Error when publish to IIS

[mig0000]

Hi,
I did the application with .Net Core 6 and I'm trying to publish it on a server with IIS. The application work ok, but can't connecto to Kubernetes (kubectl is working correctly).

That´s the error:

System.Net.Http.HttpRequestException: The SSL connection could not be established, see inner exception.
---> System.Security.Authentication.AuthenticationException: Authentication failed because the remote party sent a TLS alert: 'HandshakeFailure'.

I try to use a impersonate with my user, use the local kubeconfig, put a kubeconfig file for the connection, but i can't make it work

[tg123]

what is your server os?
seems server rejected the tls handshake, probably because tls version too old

[tg123]

could you please also double confirm your k8s server ver?
this err is due to tls version is not supported by os

see full list here https://learn.microsoft.com/en-au/windows/win32/secauthn/cipher-suites-in-schannel

[mig0000]

Yes, it is Azure AKS server. I'm connecting and working from my laptop. The problem is publish the application on preproducton server...

It´s the kubernetes versión: 1.22.6

[tg123]

could you please test
ServicePointManager.SecurityProtocol = Tls12;

https://learn.microsoft.com/en-us/dotnet/api/system.net.servicepointmanager.securityprotocol?view=net-6.0

I will pick a win2022 to test to see what happens

[mig0000]

Very thanks for your help. I try to put that property but its the some.

I think its a rule from IT (domain policies or any like this). I create a local VM machine with the some operating system and there work correctly. :P

[tg123]

could you please check with browser (edge builtin 2022)
I tested connecting to AKS on server 2022, works well for me