LocalSystem service, share, null session, ...

From: Nicolas Cadilhac (cadilhac_nospam_at_cae.com)
Date: 05/14/04

  • Next message: Andreas Hadler: "Re: Delete all files with "a pattern"" 
    Date: Fri, 14 May 2004 11:30:09 -0400

    Hi,

    this is a tricky problem I have, related to the network (made of w2k
    machines). Here it is:

    On our corporate network, I have a service that I developed that runs as
    LocalSystem. This service uses CreateProcess to run a tool that accesses a
    remote share. It works, knowing that the share has "everyone" in its
    permissions. Maybe the fact that null sessions are allowed helps (I see that
    in the local policies in the administrative tools, or directly in the
    registry).

    On another side, I have a customer that installs my service but the tool
    that is ran by CreateProcess fails somewhere (the share is also for
    everyone). I wonder if his network configuration is different... When he
    uses the service as a user, it works. If I give him a standalone version of
    the service ran by the user, it works.
    On my machine where the share is, I tried to disable null session access
    (wanting to reproduce his problem), but the service still continues to work
    while accessing the share !! (a call to net use \\machine\ipc$ "" /user:""
    fails).
    Why does it continue to work ?

    Except the problem of allowing or not null sessions, what else could I check
    to see differences on both networks ?

    Thanks a lot for your help

    Nicolas

  • Next message: Andreas Hadler: "Re: Delete all files with "a pattern""

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