While it is normal to see "anonymous" logon from computers on your network
due to null sessions used by your network computers you are right to be
concerned if you are seeing computer names that you do not recognize and
your computer never leaves your network. To prevent that from happening make
sure you are using a properly secured firewall and secure wireless network
if you are using wireless ideally using at least WPA encryption. If you are
using cable/DSL for internet access I consider it a must to have an internet
router or firewall device protecting your network and not rely on
software/host firewalls alone.
Steve
"zorro" <myahact RemoveThis @yahoo.ca> wrote in message
news:1161533268.060553.66850@k70g2000cwa.googlegroups.com...
> Hello,
>
> I have Windows XP Pro. Something in the security log makes me wonder if
> people are logging into my computer. I logged in as Administrator and
> opened
> Computer Management->System Tools->Event Viewer->Security.
>
> In the right pane, a lot of "Success Audit" items have an ANONYMOUS
> user. When I open the details for such an item I get this sort of
> thing:
>
> Successful Network Logon:
> User Name:
> Domain:
> Logon ID: (0x0,0x1B4149)
> Logon Type: 3
> Logon Process: NtLmSsp
> Authentication Package: NTLM
> Workstation Name: TUDECZKI
> Logon GUID: {00000000-0000-0000-0000-000000000000}
>
>
> Successful Network Logon:
> User Name:
> Domain:
> Logon ID: (0x0,0x1A2110)
> Logon Type: 3
> Logon Process: NtLmSsp
> Authentication Package: NTLM
> Workstation Name: KRYSTYNA
> Logon GUID: {00000000-0000-0000-0000-000000000000}
>
>
> What caught my eye is the Workstation Name. These are real names and I
> do not know any of them. Is it possible that my Internet Service
> Provider somehow allows other clients to see my computer? I do have a
> Firewall up and working.
>
> My PC has an Administrator account but I use it for that purpose only.
> I never use it to access the internet. My guest account and all other
> accounts are turned off except for one which I use for all my other
> needs. It is a power user account.
>
> I'm not a security expert but I once went through the security options
> in the administration consoles and restricted access as much as
> possible. Any ideas what's going on?
> >> Stay informed about: Anonymous users successfully logging into my pc