Dislike static addressing? Me too. I loathe having to manually add addresses to machines. This post is going to show you how to quickly and easily control your DHCP addresses by limiting the number of addresses and mapping IP's to MACs.
The image below is from is from a Linksys router, but if your router is so equipped, you should be able to figure this out without too much fuss. Having all of your machines connected to your router will make this really simple. There are three things to note: 1.) I'm not using the default network and subnet address. Although I highly recommend changing this, it's not necessary. 2.) The DHCP Reservation button. This is where we map the IP to MAC. 3.) The maximum number of users is set. This number should be set to the exact number of machines on your network for maximum effectiveness.
By clicking the DHCP Reservation button, a window similar to the image below will appear. If all of your computers are connected, they should appear in the "Select Clients from DHCP Tables" section. Select the checkbox(es) and click add clients. The name of the system, the address it is currently using, and it's MAC will appear in the "Clients Already Reserved" section. If your computers are not connected to the router, they can be manually added through the "Manually Adding Client" section, providing you know the MAC addresses.
And that's all there is to it. This is a quick and simple way to gain control over your DHCP addressing and add a layer of security as well.
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