Q
Problem solve Get help with specific problems with your technologies, process and projects.

How do I block MAC addresses from my DHCP server?

Learn how to block MAC addresses on your network from getting any IP addresses off your DHCP server, in this expert response with security expert Puneet Mehta.

Puneet Mehta
SDG

How do I block a MAC address on my network so that a PC with that particular MAC address cannot get any IP address...

from my DHCP server?

You can do it in two ways:

  1. If you know the number of PC's on your network, then force MAC binding in DHCP and limit the range of available IP's in your DHCP to the number of PC's on your network. This way there will be no free IP's available for the DHCP to assign to a new PC that comes online. Of course, you will have exclusion range for your servers configured already.
  2. The best solution is to use NAC -- a network access control product. The one that is available, free and works great is Packetfence. It's an open source distribution and does a lot more than just problem solve a DHCP. You can download this from the Sourceforge site.
Hope this helps.

This was last published in May 2007

Dig Deeper on Network Access Control

Have a question for an expert?

Please add a title for your question

Get answers from a TechTarget expert on whatever's puzzling you.

You will be able to add details on the next page.

Meet all of our Networking experts

View all Networking questions and answers

Join the conversation

1 comment

Send me notifications when other members comment.

Register

Please create a username to comment.

To prevent hackers getting to your IP best thing and simplest is to use VPN to change your IP, so they can't reach you. VPN lets you choose what IP you want and from what country. I would recommend using HIDE-MY-IP...
Cancel

-ADS BY GOOGLE

SearchSDN

SearchEnterpriseWAN

SearchUnifiedCommunications

SearchMobileComputing

SearchDataCenter

SearchITChannel

Close