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SecurityProtocolType.Tls11 Issue

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Fiddler Classic
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Tomas
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Tomas asked on 02 Jun 2020, 02:16 PM

Hi,

In the HTTPS tab in Fiddler, I have Fiddler set up to 'ignore server certificate errors' and have the following protocols listed: <client>;ssl2;ssl3;tls1.0;tls1.1;tls1.2

 

When looking at the inspector tab in Fiddler for www.skybet.com, any url related to login (launched when LogIn in the top bar is selected) fails with a 403 i.e. https://www.skybet.com/secure/identity/m/login/mskybet?urlconsumer=https://m.skybet.com&dl=1. 

The only setting in .Net that will return a response for such urls is ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls11. Is there some other setting in Fiddler (or in CustomRules.cs) I should change to return a response from such urls?

Thanks!

 

 

 

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Eric R | Senior Technical Support Engineer
Telerik team
answered on 04 Jun 2020, 09:37 PM

Hi Scott,

I believe the 403 appears to be used for region locked content. I was unable to navigate to the provided URL using a browser as shown in the below screenshot. Note that using Fiddler will not enable getting around any regional restrictions.

Additionally, I am not sure this is a TLS 1.1 issue as this is supported by Fiddler. It could also be that the web server is forcing an upgrade. Although, this is unlikely as many of the modern browsers support the newer protocols. 

Can you confirm if navigating to the same URL yields the same 403 result?

In the meantime, please let me know if you need any additional information. Thank you for using the Fiddler Forums.

Regards,


Eric R | Senior Technical Support Engineer
Progress Telerik

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Eric R | Senior Technical Support Engineer
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