smb signatures - per tcp session or per smb session sequence numbers?

Steven French sfrench at
Wed Feb 23 05:42:32 GMT 2005

When two different user smb session (smb_uids) are multiplexed over one tcp
session from a single client to a single server - signing does not appear
to work on the first request for what will be the second uid ie the 2nd
SessionSetup request (at least from the Linux client).

There seems to be evidence that the sequence number used for signing is
global to the tcp session (not to the smb uid - smb session as I had

I will need to test this tomorrow.

Steve French
Senior Software Engineer
Linux Technology Center - IBM Austin
phone: 512-838-2294
email: sfrench at-sign us dot ibm dot com

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