While screen sharing is arguably all that's needed to access your Mac, if you are Terminal-savvy and using a slow connection then the low-bandwidth demands of the Terminal can be much easier to manage.
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To use remote services with your iCloud-configured computer, you will need both the computer's name, and your iCloud account number. Looking up your network name simply entails going to the Sharing system preferences and locating the name of your system that ends with.
Next you will need your iCloud account number, which can be looked up on your system by opening the Terminal and running the following command:. This command will return information on the network domains used for registering services on the system, one of which will be "local" and the other which will be "icloud.
This number is your account number. With these two pieces of information, you can now assemble a fully qualified domain name FQDN for targeting your system from anywhere on the internet, using the following scheme:.
How to connect to a remote host via "Back to my mac" via SSH
With this address assembled, now you can log into your system using SSH, such as the following example:. When you connect, as with any initial SSH session you will be prompted to authenticate and confirm the creation of an RSA fingerprint, and then be able to peruse your remote Mac using the Terminal. While this outlines the use of this feature for SSH connections, you may be able to use it for other sharing services you use, including file sharing with alternate protocols, remote printing to a shared home or office printer, establishing a VPN connection to your home network through OS X Server, among many other possibilities.
This means that unless your network is set up to route SSH traffic to your system, then you could have a hard time connecting.
Nevertheless, in a simple networking environment where you know the desired IP address, using it is the quickest way to resolve a route to your computer. Similar to a URL for a Web site, this allows for the same method of connecting to your Mac, but foregoes the requirement to memorize IP addresses. The above options are best for when logging into your Mac from the same local network; however, there may be times when you would like to log in from another network, such as if you are on Wi-Fi at a local cafe.
First, ensure your current Mac and the one you leave at home or elsewhere are both logged into your iCloud account, and then you can open the Terminal on either and run the following command:.
The BackToMyMac domain tree contains all you need to specify your iCloud account, and thereby connect to any Mac you have registered with it. The output for this command will give you a hierarchical tree of the domains used for accessing your Macs through iCloud, and will look like the following:.
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This URL should allow you to connect to your Mac from any network local or remote , provided there are no odd firewall rules blocking your access. This means that services like File Sharing and Screen Sharing can be automatically discovered and used seamlessly as long as there is an unhindered path between two computers.
This means once you have iCloud set up, then regardless of where you are, you can access these sharing services on your other Macs by selecting them in the Finder sidebar.
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