Login Failed while user is really logged!

  • Hi,

    We have several SQL2000 servers in a DMZ that are setup to accept TCP/IP connections.

    I started auditing the "Failed Log-ins" at the Windows system level and in no time I had a ton of Log-in failed messages under my Event Viewer's Security tab.

    The messages indicate users (which, by the way, are indeed valid users and ARE logged through TCP/IP doing their work) have failed to login.

    Notes:

    - The event viewer picks up the machine name.

    - This does not happen when there is no firewall is between the server and client.

    Is the client trying to connect in any other way than intended?

    A.

  • Might be attempting named pipes. Probably need to check clients for protocol bindings and perhaps sniff the network.

    Steve Jones

    sjones@sqlservercentral.com

    http://www.sqlservercentral.com/columnists/sjones

  • That was also my thought. There is no indication on the client side to prove that.

    Will keep digging.

    Thanks

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