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by rob miners

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In my systems settings I have these events happening every 1/2 hour or so.

Event ID 26 "Warning" Intel(R) PRO/1000 CT Network Connection Link has been disconnected.

Event ID 27 "Information" Intel(R) PRO/1000 CT Network Connection Link has been established.

Any ideas
TIA
Rob

15 replies

by nz_justice

You could have a faulty switch or router or patch panel or cables or nic card(so hardware problem) check your hardware. It could be your not supplying your nic with enough power, power supply upgrade. You could have a setting in your nic properties enabled that says disconnect if idol for 30 minutes. If it is wireless your connection could be dropping because of other interference that occurs every 30 minutes. You might have a virus, or spy-ware. A script could be running in the back ground that continually disconnects and reconnects the connection every half hour.

by nz_justice

Get your line tested, it should be a free service form your telecommunications provider, There could be a fault on your line. You also might have been hacked and someone, who periodically every half hour, has a program running that is sending a denial of service attack (DOS attack) to your PC.

by rob miners

Server Local Area Connection Status.
Status = Connected
Duration = 17 Days 17:06:06
Speed = 100.0 Mbps

It Might be my ISP it doesn't look like its my LAN.

by gary56789

When you go into Control Panel--Administrative tools--Event Viewer--System...what is listed under the Source column for Event ID 26?

by gary56789

Try uninstalling/reinstalling the NIC drivers (don't reinstall from the pc, download or use the original installation CD).

Let us know what happens.

by gary56789

Except for reinstalling the OS, I think you have ruled out the PC as being the problem (although replacing the NIC might possibly solve the problem). Next, try to test the modem you use to connect to your ISP. If it tests out fine, ask the phone company to check their equipment. I had a similar problem once which was traced down to a switching box in an industrial complex near here.

by rob miners

I Found this information.
Source Event ID Last Occurrence Total Occurrences
Security 529 25/01/2006 10:58 AM 134 *
Logon Failure:
Reason: Unknown user name or bad password
User Name: user
Domain: 용은희
Logon Type: 3
Logon Process: NtLmSsp
Authentication Package: NTLM
Workstation Name: 용은희
Caller User Name: -
Caller Domain: -
Caller Logon ID: -
Caller Process ID: -
Transited Services: -
Source Network Address: 211.110.34.156
Source Port: 0

Source Event ID Last Occurrence Total Occurrences
Security 531 25/01/2006 10:07 AM 2 *
Logon Failure:
Reason: Account currently disabled
User Name: guest
Domain: THOMPSONF
Logon Type: 3
Logon Process: NtLmSsp
Authentication Package: NTLM
Workstation Name: TFSRVR01
Caller User Name: -
Caller Domain: -
Caller Logon ID: -
Caller Process ID: -
Transited Services: -
Source Network Address: 217.36.223.211
Source Port: 0

by rob miners

Windows 2003 SBS
I found the errors in event viewer, System

Server is .local
DHCP enabled
DNS is .local
Modem is Netcomm NB1300+ Acts as Gateway
I have enabled port forwarding for remote access and it is a DMZ

by rob miners

Uninstalled NIC Reinstalled NIC still the same.

I am starting to think that it could be my ISP but i have a static connection.

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