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IP Conflict prevention

By Adavi ·
I have a medium size LAn of 50 nodes. use internet connection sharing to distribute the broadband internet link on my backup server. Use static IP addresses for the workstation. Some one somewhere in the LAN is configuring his system to the same 192.168.0.1 to conflict with the server, hence no one can browse.
How can this be prevented? How do I know which computer/workstation has the MAC address on the event viewer message?

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by Eminent87 In reply to IP Conflict prevention

why not use DHCP to help avoid this issue?

If DHCP is not an option then you should restrict everyone's privilege so that they cannot change the network settings. What OS are the workstations using?

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by Adavi In reply to

A good suggestion, when i use DHCP, the workstation will not browse. The workstation are mixed OS, win 98, 2000pro, xp pro. I do not have budget to buy proxy server software.

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by willcomp In reply to IP Conflict prevention

To identify the culprit, you can run winipcfg (Win9 or ipconfig /all on each client to find their MAC address.

Recommend that you document each client's configuration while you're at it. Probably will come in handy later. It is a good practice to document settings when first configuring a client PC. Keep a spreadsheet or database with each client's info (IP address, MAC address, OS, NIC, ID number, location, user, etc.)

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by Adavi In reply to

These are recommended practice before configuration, now it has been configured, scattered in five floors of two buildings, how can I just do it within the shortest time? i am a consultant, I did not configured the LAN. the client is not ready to spend much money on man hour or buying any software.

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by ewgny In reply to IP Conflict prevention

download and run nbtscan
http://www.inetcat.org/software/nbtscan.html
run the following
nbtcscan 192.168.0.1-254
It will quickly run a scan on 192.168.0.1 through 192.168.1.254 and give you a one line output of all computer names, IP's and mac addresses

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by Adavi In reply to

The answer solved my problem. Thanks

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by Adavi In reply to IP Conflict prevention

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