Locate and click the following key in the registry:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanserver\parameters
On the Edit menu, click Add Value, and then add the following registry value:
Value Name: SizReqBuf
Data Type: DWORD Value
Radix: Decimal
Value: 65535
Quit Registry Editor.
SizReqBuf REG_DWORD 512 to 65536 bytes
------------------------------------------
Default: 4356
Specifies the size of request buffers that the server uses. Small buffers use less memory; large buffers may improve performance.
Packet Filter Capture Offsets
SMB Read Filter
SMB Right Filter 2E 18
SMB Write Filter 2f 18