An SSL session is established between two nodes (via ip addresses,layer 3) or between applications ( layer 4) ? Thanks
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Neither layer 4 or 3. Its on layer 5 or 6 or 7. Depending on the application.Cyberduck– Cyberduck2019-12-10 20:48:47 +00:00Commented Dec 10, 2019 at 20:48
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Let's suppose i want to connect to a server encrypting both skype and a browser with SSL (for example) do i need 2 sessions ?AleWolf– AleWolf2019-12-10 20:50:49 +00:00Commented Dec 10, 2019 at 20:50
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1 Answer
IP, and TCP/IP pre-dates the OSI model. Layers 1-4 of OSI almost map to the network and TCP/IP stack (which TLS sits on top of) but if you keep trying to explain one in terms of the other you're going to become lost; there are at least 3 session layers in a HTTP/2 application (TCP, TLS, HTTP), usually 4 (+application state) and sometimes more (+authentication).
