If you’re using Mac OS X, you can set up a static IP address to help keep your computer from being hijacked by someone who wants to access it from a location other than the local network. To do this, open System Preferences and click on the Network tab. Under the IPv4 section, select the option to set a static IP address. You’ll need to provide some information about your computer and your network, such as your ISP’s name and address. Once you’ve set up your static IP address, you can use it in place of DHCP when needed.
Previously we showed you how to set a Static IP in Windows, and you have a Mac machine on your network, you might want to assign it a Static IP as well.
Set Static IP in OS X
You will need to open System Preferences, once there open Network
It would be a good idea to to edit the Locations so that you can easily change from DHCP to manual IP simply. You will need to go to Edit Locations… with in the Network Preference Pane
Name it something that will let you remember what it is for.
Once you have named the new location you will click on the connection you want to set manually. In this example we will use Ethernet. From the Configure IPv4 drop down we will choose Manually.
Now we will add the IP Address, Subnet Mask, Router, DNS and Search Domains. In this example we will use Google’s DNS which is 8.8.8.8 and your Search Domain will depend on your network.
This is a handy little option to use if you are setting up your own small network for home office or even LAN parties. It can be helpful when troubleshooting networks as well.
Another OS X networking article you might be interested in is how to mount a Windows share in OS X.
