Home > Ask the Networking Experts > Network security with Puneet Mehta Questions & Answers > How do I block MAC addresses from my DHCP server?
Ask The Networking Expert: Questions & Answers
EMAIL THIS

How do I block MAC addresses from my DHCP server?

Puneet Mehta EXPERT RESPONSE FROM: Puneet Mehta

Pose a Question
Other Networking Categories
Meet all Networking Experts
Become an Expert for this site


Network security news, advice and technical information
Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google


>
QUESTION POSED ON: 10 May 2007

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?


>
EXPERT RESPONSE

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.


Sound Off! -   Post your comments |  See others' comments (1)


Digg This!    StumbleUpon Toolbar StumbleUpon    Bookmark with Delicious Del.icio.us    Add to Google


RELATED CONTENT
Network security with Puneet Mehta
To simulate voice over IPSec VPNs which simulators work?
How to set passwords on folders in Windows 2003 servers
What commands allow network traffic to pass through PIX firewalls?
For an SMB firewall, what features should I look at?
Can users on my LAN view my computer from other machines?
Without an application-layer firewall, do I run network security risks?
Does a firewall need two static IPs for port forwarding?
What is layered defense approach to network security?
What is FEC in MPLS?
What are TCP Wrappers? How do they work?

Network Access Control (NAC)
Securing the new network architecture: Security for distributed, dynamic networks
What is data loss prevention? -- An introduction to DLP
How to set passwords on folders in Windows 2003 servers
Is my firewall setting preventing wireless network guest access?
NAC vendor Bradford Networks offers simplified product for guest and contractor access
What commands allow network traffic to pass through PIX firewalls?
Intelligent network switches on the rise as more is expected of the network
NAC solution authentication fix for your wireless network
Where is a cheap wireless access solution requiring no administration/support?
Cisco Trusted Security to boost network security, management

Network Security Products
Securing the new network architecture: Security for distributed, dynamic networks
What is data loss prevention? -- An introduction to DLP
To simulate voice over IPSec VPNs which simulators work?
Is my firewall setting preventing wireless network guest access?
How to configure Windows Server 2008 advanced firewall MMC snap-in
How to retrieve passwords from locked laptops
How to interpret test scan results to assess network vulnerability
What commands allow network traffic to pass through PIX firewalls?
For an SMB firewall, what features should I look at?
Creating Remote Access and Site-to-Site VPNs with ISA Firewalls: from 'The Best Damn Firewall Book Period, Second Edition'

RELATED GLOSSARY TERMS
Terms from Whatis.com − the technology online dictionary
network access control  (SearchNetworking.com)

RELATED RESOURCES
2020software.com, trial software downloads for accounting software, ERP software, CRM software and business software systems
Search Bitpipe.com for the latest white papers and business webcasts
Whatis.com, the online computer dictionary



Search and Browse the Expert Answer Center
Search and browse more than 25,000 question and answer pairs from more than 250 TechTarget industry experts.
Browse our Expert Advice

HomeNewsTopicsITKnowledge ExchangeTipsAsk the ExpertsWebcastsWhite PapersNetworking Product Trials
About Us  |  Contact Us  |  For Advertisers  |  For Business Partners  |  Site Index  |  RSS
SEARCH 
TechTarget provides enterprise IT professionals with the information they need to perform their jobs - from developing strategy, to making cost-effective IT purchase decisions and managing their organizations' IT projects - with its network of technology-specific Web sites, events and magazines.

TechTarget Corporate Web Site  |  Media Kits  |  Reprints  |  Site Map




All Rights Reserved, Copyright 2000 - 2008, TechTarget | Read our Privacy Policy 		  TechTarget - The IT Media ROI Experts