Please be advised, there is a current issue with PAN-OS 8.1 which seems to break anything SMB related, e.g. mapped network drives. Sessions have an end reason of "resources-unavailable" and go into state "Discard" in the session table.
Upon speaking with a TAC engineer, this is a known issue and they are working towards a fix.
Edit: This is now resolved in PAN-OS 8.1.1 under BugID:
Fixed an issue where Server Message Block (SMB) sessions were in a discard state with the session end reason resources-unavailable
Solved! Go to Solution.
So far I've had no issues with 8.1 och PA-220, not that much traffic passing through it though...
On a couple of PA-850 the only option was to do a downgrade, no SMB traffic worked as intended.
Could it be related to certian hardware platforms? What platforms have you experienced problems on?
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