My newly built home LAN consists of 3 PCs [2 are wireless].LAN uses an old LINKSYS WRT51AB router with WEP enabled. All 3 PCs use WIN XP PRO. I am not sure I have security totally correct yet.
Question: Occasionally, when the wired desktop is turned off, XP often asks at shutdown, "Other USERS might be logged on, do you really want to shutdown and risk them, loosing data"? Not sure of exact message.
Always when I am asked this question, the other two wireless PCs have been OFF all day. Is it possible that another USER [not part of my LAN] is really logged on? If yes, that USER must have logged on using WIRELESS. How can I see that USER to identify him? Since the desktop does not have any wireless NIC card or wireless on MOBO, must I turn on a wireless PC to find POSSIBLE OTHER WIRELESS USER? Is this info in the router logs? Is there software that will help me ID the unwanted USER? How can I determine if there is REALLY a unwanted USER? IS XP sending me a message that is not a real problem?