GlobalProtect SMB file transfer results in error for large files

[raji_toor]

We have some users that need to transfer large files on-preemies. When copying files shortly between 5-20% data transfer this error is thrown. Files are MultiGig in size. Small file around 100M that I tested did not show this error.  Copying to the same file share from within on-prem network does not give this error. I have tried changing mtu as per this article and that also did not help.

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000PPbZCAW

[BPry]

@raji_toor,

Have you reviewed your PanGPS logs to verify that your clients aren't disconnecting at any time during the file transfer? 

[raji_toor]

@BPry  i put a continuous ping the destination server from the client PC.

1 ping drop occurred but did not stop stop transfer until later.

no ping drop and it still drops.

[aleksandar.astardzhiev]

Hi @raji_toor ,

Have you tried to disable contentin inspection for this SMB traffic?

You can follow this article and try with DSRI first, but we recently troubleshoot slow transfer from GP users and DSRI didn't make any change. We created custom application and application override rule to completely disbable content inspection for the SMB traffic from our GP users to the internal server.

https://knowledgebase.paloaltonetworks.com/KCSArticleDetail?id=kA10g000000ClpfCAC