There are 50 pcs in our local network.some of he pcs are provided with internet IP address & only these pcs have permission to access the Internet. So the other users are hacking the IP addresses and using internet services. We want to prevent them from editing I.P. address in network properties window. Please HELP me out.So your router is configured to block certain IP addresses from accessing the internet, right?

You could always try changing the users computers that AREN'T allowed to access the internet to have a limited user account. On the computer(s) you don't want on the internet you can use gpedit.msc to deny them the ability.

Click start, (on xp then click run) type "gpedit.msc" go to User Configuration>Administrator Templates>Network>Network Connections. Double click Prohibit access to properties of a LAN connection, set to enable. You can adjust what else you need to also. Just don't let them see you do this then they can change it back!

Good LuckIt sounds like you have a big problem and need to hold the people who are hacking IP address accountable for their actions.

There are several commercial programs that monitor all computer useage. There are some that are specifically designed to monitor internet useage. With an internet monitoring program you could even turn on internet useage for EVERYONE, and monitor who goes where and for how long.

There's a big difference between someone who goes to weather.com for a minute and someone that spends all day on a porn site.

If you gave internet access to everyone, you would need to lay out the rules, let them know they are being monitored, and what the consequences for abuse would be.Assuming all of your computers are Windows, Group Policy would be the best way to do it. Is your network part of a domain or a workgroup? In a domain structure, you can set the group policy in Active Directory, which would be the most efficient way to do it. If you're on a workgroup, you'll have to go to each computer individually and set group policy as joe3fl stated.

Without knowing more about your network infrastructure, we can't really give much more advice.Quote from: prasil on August 10, 2010, 10:48:18 AM

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There are 50 pcs in our local network.some of he pcs are provided with internet IP address & only these pcs have permission to access the Internet. So the other users are hacking the IP addresses and using internet services. We want to prevent them from editing I.P. address in network properties window. Please help me out.