What exactly are you still wondering? The basis of this post still remains the same, PAN does not currently support the decryption of TLS1.3 traffic.
@BPry-Thank you for the quick reponse. I didn't completely understand the fact that palo was supporting but not decrypting on this as of yet. I think it was mentioned in this post, but I'm guessing most are eagerly awaiting hearing how this will work in the future, being transparent/explicit, or however it will work/if it will work...
From a pure security perspective, do you forsee more and more dependence on the endpoint logging and detection, and less and less from the firewall perspective moving forwared? Without decryption, it seems like the ACC would be a block of SSL and dns.
I'm running under the assumption that there will be a break in time in which we need to follow current guidance and disable TLS1.3 on endpoints to ensure it only utilizes something that can be decrypted.
From a pure fundamental standpoint decrypting TLS1.3 doesn't actually change, it's still very possible. The ability to passively decrypt the connection with a private key however does. PAN just needs to make some adjustments to the way they are decrypting traffic and this will function from a firewall level perfectly fine. This is already targeted for a public release in 9.1 (that could get pushed back), so until the time comes that you can install whatever release TLS1.3 decryption is enabled in, simply force your clients to fall back to 1.2.
Nothing has changed.
Support of decrypting TLS versions will only come in the release of new PAN-OS versions other than patch updates (so X.X). It wasn't supported on 8.0.X, it's not supported on 8.1.X nor is it supported on 9.0.X. The community is currently waiting on a public release as to if it'll be support in 9.1.X or if even somtime in a future release.
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