How do I share a Wi-Fi connection via a Wi-Fi hotspot?
Install Windows (making use of rEFIt if you get on a Mac). Install Connectify.
If you are a programmer and also make use of Linux, it needs to be feasible to create a new bit component that will certainly complete the "full duplex endpoint+repeater" capability. For beginners, target one details tool that you can get the wifi chipset datasheets for ; you require bus architecure, register numbers, memory addresses, interrupt numbers, signal timings, radio boot regimen, and also the function checklist (simultaneous and also asynchronous).
Mac OS X has an "internet sharing" feature in the Sharing panel in System Preferences.
As several people have already figured out in the question and answers here, it lets you share the connection from one hardware interface via any other hardware interface, but it can't use a single Wi-Fi interface as both the main connection and to re-share. (Windows 7 can do this, thanks to "network virtualization" features added by Microsoft, which essentially allows a single hardware Wi-Fi interface to respond to multiple SSIDs, and that's the underlying feature that Connectify leverages.)
One option that Mac OS X has that isn't quite an answer to this question, but is useful in some of the same situations, is that it can use Bluetooth to create a Personal Area Network (PAN), and its internet sharing feature can share the internet connection from Wi-Fi over the Bluetooth PAN, as documented here.
I've used this successfully to get an iPad to piggyback on a Macbook's Wi-Fi connection, so both were able to access the internet simultaneously in a hotel where I could only get one device on Wi-Fi. I was not able to get an iPhone 4S to connect to the PAN in the same situation, but supposedly it works for iPod Touches. I don't know if other computers (Mac OS X, Windows, Linux or otherwise) are able to join the PAN and use it as their internet connection.
You can not "share" a Wi - Fi link using a Wi - Fi hotspot.
What is misdirecting everyone is the inapropriate use the technological regard to sharing when the function we are broaching is a redistribution .
When 2 computer are attached on the very same Wi - Fi hotspot they are absolutely sharing the very same link: they are making use of the very same Wi - Fi network, they are sharing the router IP public address.
When you start up
System Preferences > Sharing you are not beginning a sharing, yet the redistribution of a major network accessibility towards a second network accessibility. On this second network accessibility,
you are working as an accessibility router. You are dispersing IP exclusive addresses.
On your key network accessibility you have a public IP address, on your second network accessibility, you have an exclusive IP address, and also you convert the website traffic IP addresses from the general public side towards the exclusive side and also vice versa.
To be able to execute this redistribution of IP website traffic originating from your key network accessibility towards the very same physical accessibility your OS need to have the ability to offer you this physical user interface as 2 differents digital user interfaces, commonly
en1 and also
MacOS X does not give such a virtualisation function.
You can not rearrange your Ethernet link towards your Ethernet connection.¢ You can not rearrange your Wi - Fi link towards your Wi - Fi link.
Connectify (on Windows 7) is merely marketing a typical function of Windows which allow to create 2 digital Wi - Fi user interfaces in addition to one physical one (see: Wi-Fi hotspot for Windows 7). After that Windows rearrange the network accessibility of the key Wi - Fi towards the 2nd one.
If you suggest on a computer system, you can make use of Connectify. I utilize it it function it is wonderful if you are attached to WiFi ; your computer system acts a router to all your various other tools. If you suggest a hotspot on your iPhone most likely to Settings > Network > Turn Cellular Data On and afterwards enable the hotspot.