If the operating system supports TLS 1.2, then does it matter what version of .NET the apps are running in?












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We have a 2016 webserver with only TLS 1.2 enabled (used IISCrypto tool to verify that). This webserver has 2 web apps both built in .NET 3.5 - one website and one wcf service.



I've done nothing but disable all other protocols so that only TLS 1.2 is available. I've also done the same in my browser settings. I then accessed both URLs in a browser and to my surprise there were no issues.



I then used Fiddler and Wireshark to confirm that the protocol used is TLS 1.2, so it appears that in this setup, with a 2016 webserver running .NET 3.5 apps that TLS 1.2 is supported - without me changing any of the .NET code.



I'm not unhappy with this result, but I am a little confused and hoped someone might clear this up for me, because my research indicated that the TLS protocol had to be supported in the application, either by adding code to earlier versions or upgrading to a version where TLS 1.2 is supported (like 4.6.1). Other options were to change registry settings - but I'm honestly not clear on whether the registry changes were in conjunction with the code changes/upgrades or not.



In my case, it seems that since the OS supports the protocol, then the app version does not matter. Has anybody else had this experience or am I missing something?



Thanks in advance!



codenewbie










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    0















    We have a 2016 webserver with only TLS 1.2 enabled (used IISCrypto tool to verify that). This webserver has 2 web apps both built in .NET 3.5 - one website and one wcf service.



    I've done nothing but disable all other protocols so that only TLS 1.2 is available. I've also done the same in my browser settings. I then accessed both URLs in a browser and to my surprise there were no issues.



    I then used Fiddler and Wireshark to confirm that the protocol used is TLS 1.2, so it appears that in this setup, with a 2016 webserver running .NET 3.5 apps that TLS 1.2 is supported - without me changing any of the .NET code.



    I'm not unhappy with this result, but I am a little confused and hoped someone might clear this up for me, because my research indicated that the TLS protocol had to be supported in the application, either by adding code to earlier versions or upgrading to a version where TLS 1.2 is supported (like 4.6.1). Other options were to change registry settings - but I'm honestly not clear on whether the registry changes were in conjunction with the code changes/upgrades or not.



    In my case, it seems that since the OS supports the protocol, then the app version does not matter. Has anybody else had this experience or am I missing something?



    Thanks in advance!



    codenewbie










    share|improve this question



























      0












      0








      0








      We have a 2016 webserver with only TLS 1.2 enabled (used IISCrypto tool to verify that). This webserver has 2 web apps both built in .NET 3.5 - one website and one wcf service.



      I've done nothing but disable all other protocols so that only TLS 1.2 is available. I've also done the same in my browser settings. I then accessed both URLs in a browser and to my surprise there were no issues.



      I then used Fiddler and Wireshark to confirm that the protocol used is TLS 1.2, so it appears that in this setup, with a 2016 webserver running .NET 3.5 apps that TLS 1.2 is supported - without me changing any of the .NET code.



      I'm not unhappy with this result, but I am a little confused and hoped someone might clear this up for me, because my research indicated that the TLS protocol had to be supported in the application, either by adding code to earlier versions or upgrading to a version where TLS 1.2 is supported (like 4.6.1). Other options were to change registry settings - but I'm honestly not clear on whether the registry changes were in conjunction with the code changes/upgrades or not.



      In my case, it seems that since the OS supports the protocol, then the app version does not matter. Has anybody else had this experience or am I missing something?



      Thanks in advance!



      codenewbie










      share|improve this question
















      We have a 2016 webserver with only TLS 1.2 enabled (used IISCrypto tool to verify that). This webserver has 2 web apps both built in .NET 3.5 - one website and one wcf service.



      I've done nothing but disable all other protocols so that only TLS 1.2 is available. I've also done the same in my browser settings. I then accessed both URLs in a browser and to my surprise there were no issues.



      I then used Fiddler and Wireshark to confirm that the protocol used is TLS 1.2, so it appears that in this setup, with a 2016 webserver running .NET 3.5 apps that TLS 1.2 is supported - without me changing any of the .NET code.



      I'm not unhappy with this result, but I am a little confused and hoped someone might clear this up for me, because my research indicated that the TLS protocol had to be supported in the application, either by adding code to earlier versions or upgrading to a version where TLS 1.2 is supported (like 4.6.1). Other options were to change registry settings - but I'm honestly not clear on whether the registry changes were in conjunction with the code changes/upgrades or not.



      In my case, it seems that since the OS supports the protocol, then the app version does not matter. Has anybody else had this experience or am I missing something?



      Thanks in advance!



      codenewbie







      operating-systems web tls wcf






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      edited Jan 23 at 15:12







      codenewbie

















      asked Jan 23 at 14:04









      codenewbiecodenewbie

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