topic Re: GlobalProtect SMB file transfer results in error for large files in General Topics

GlobalProtect SMB file transfer results in error for large files

raji_toor — Mon, 23 Nov 2020 19:05:39 GMT

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

Re: GlobalProtect SMB file transfer results in error for large files

BPry — Wed, 25 Nov 2020 04:34:54 GMT

@raji_toor,

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

Re: GlobalProtect SMB file transfer results in error for large files

raji_toor — Thu, 26 Nov 2020 22:51:48 GMT

@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.

Re: GlobalProtect SMB file transfer results in error for large files

aleksandar.astardzhiev — Sat, 28 Nov 2020 17:59:54 GMT

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