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I have created a couple of C# .NET 5 websites and deployed them via Kestrel to my Raspberry Pi. I am using Docker and the setup I have is: Website1 - uses port 5000 and port 5001 (https) Website2 - uses port 5002 and port 5003 (https)

I configured port forwarding on my router with a range from 5000 to 5050. This must be setup correctly since Website1 is accessible from outside my network just fine and external IP works fine.

I can access Website2 from any machine on my local network (using raspberrypi:5002) but if I try to access from a device not connected to my network (using external IP address and port 5002) then it fails to load. I noticed this error on the Pi:

Microsoft.AspNetCore.Antiforgery.DefaultAntiforgery[7] An exception was thrown while deserializing the token. Microsoft.AspNetCore.Antiforgery.AntiforgeryValidationException: The antiforgery token could not be decrypted. ---> System.Security.Cryptography.CryptographicException: The key {b0a63215-b1e3-42f7-8d5b-921be6ed3d1a} was not found in the key ring.

It seems strange this error appears but I probably don't understand it to be honest as I normally just write code. Can anybody please advise what the problem might be?

What I have tried:

I have googled lots and tried many things.
Posted
Updated 16-Feb-22 22:27pm
Comments
[no name] 15-Feb-22 12:47pm    
Maybe your code isn't fully re-entrant, and you're trying to "share" a token.

Ok, I have discovered that the website loads fine if I turn off the Wifi on my phone. My network seems to be 'blocking' the website somehow.
 
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I have got round the error by preventing HTTPS but unfortunately the page still doesn't load.
 
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