If you use a shared connection, all your network's computers share one public IP address, much as the phone extensions in an office share one outside telephone number. The question is, when you're somewhere else, how do you find your computer's IP address so that Remote Desktop can establish a connection to it? It has four sets of numbers separated by periods and looks something like this: This will always be your computer's number.
You can simply type this in when using the Remote Desktop client to connect to your computer. However, static addresses are relatively hard to get and usually carry a monthly surcharge; in some cases, ISPs simply cannot or will not provide them. So although this is worth looking into, it might not be an option. My home ISP is sonic. In most cases, dial-up, DSL, and cable Internet connections use dynamic addressing, in which a different IP address is assigned to you every time you or your router connects to your ISP or, in the case of cable service, whenever your cable modem is reset.
Thus, your computer's IP address can change at any time, and you won't necessarily know what it is when you want to connect from somewhere else. The solution to this problem is to use a free dynamic domain name service DDNS.
It has two parts: First, on a DDNS provider's website, you register a host name , a name of your own choice, attached to one of several domain names that the provider makes available. For example, you might register the host name mycomputer in the domain homedns.
Some Internet connection-sharing routers have a DDNS client built in, or you can download and install a software version on your computer. When this is all set up, you can use the name mycomputer. Many DDNS providers exist, most of which are free services. Here I give you step-by-step instructions for setting up service with dyndns. Now your DDNS service is set up. Your router's setup screen will likely differ from this, but it will generally look something like the one in Figure Figure Type the command ipconfig and press Enter.
Note the gateway address for the local area connection entry, which will be something like Close this window and open Internet Explorer. If your router doesn't have a DDNS client built in, or if you are not using a hardware router, you have to install a software DDNS client to do the job.
You want one that doesn't require any manual intervention to get started and that always runs even when nobody is logged on.
This means that you need one that operates as a Windows service rather than as a regular desktop application. Here's how to set it up. If you use Windows Internet Connection Sharing, perform this procedure on the computer that shares its connection with the Internet, whether or not it's the computer that you're enabling for Remote Desktop access. Otherwise, do this on the computer that you're enabling for Remote Desktop access. Follow the wizard's instructions, clicking Next after you fill in any required information on each page.
On the first page, if you have dial-up or DSL service that requires a logon and password and the connection is made directly from your computer , click Dial-Up. If you have cable Internet service or you have a router that establishes the connection for you, select Local Area Network.
Now your registered host name will always point to your computer, even when your IP address changes. After a change, it might take up to an hour for the update to occur, but changes should be infrequent. The last setup step is to make sure that incoming Remote Desktop connections from the Internet make it to the right computer.
If your computer connects directly to your cable or DSL modem, you can skip this step. However, if you use Internet Connection Sharing or a connection-sharing router, you have to instruct your sharing computer or router to forward Remote Desktop data through to your computer.
To be precise, you have to set up your sharing computer or router to forward incoming requests on TCP port to the computer you want to reach by Remote Desktop. The procedure depends on whether you are using the Internet Connection Sharing service built into Windows or a hardware-sharing router. Use one of the procedures described in the next two sections. If you use the built-in Internet Connection Sharing service provided with Windows to share an Internet connection on one computer with the rest of your LAN, the forwarding procedure is pretty straightforward using these steps:.
Now you should be able to reach your computer from anywhere on the Internet. If the connection doesn't work, check the "Troubleshooting" section at the end of the chapter for some suggestions. If you are using a hardware connection-sharing router, setup is a bit more difficult but is worthwhile.
Then, under System , select About , and under Windows specifications , look for Edition. When you're ready, select Start , and open Settings. Select the remote PC name that you added, and then wait for the connection to complete. Make sure you have Windows 10 Pro. You'll need this later. Enable Remote Desktop. Windows 11 Windows 10 More Set up the PC you want to connect to so it allows remote connections: Make sure you have Windows 11 Pro. Windows Help will open with a link to your Firewall settings, click on the Click to open Windows Firewall link.
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