I have a private MAC address showing up on my LAN with a DHCP assigned IP address that I haven't been able to identify. I've used NMap pointed at the IP associated with the 'private' MAC address but it can't identify anything about it either.
OS X has the capability of creating what is commonly referred to as an ad hoc network. Sricam for mac os. It’s a decentralized wireless network – that is, no router required. Before writing this short how-to, I was curious as to the actual definition of the expression “ad hoc.” According to OS X’s built-in New Oxford American Dictionary, it’s an adjective that means 'done for a particular reason.' Nowadays, many of us are able to take for granted the availability of Wi-Fi networks.
Lycom pe114m low profile pcie 2.0 host adapter for mac. One of the last bastions of Wi-Fi-free environments – the airliner – is joining in on the fun of ubiquitous Internet. Nevertheless, there are times when you do not have a network connection of any sort. You need to get one or more devices talking – perhaps for sharing or transferring files, playing your favorite multiplayer network game, or using OS X’s AirPlay functionality for such things as classroom visualization of an iOS device on a Mac screen. And so, we’ve established our “particular reason” to create a Wi-Fi network for a one-time use. OS X lets us do this quite easily.
Apple’s official name is Computer-to-Computer Network, but I’ll go by the more common moniker, Ad Hoc Network. You can create an ad hoc network between two or more computers and hand-held devices without using an AirPort Base Station or other router. It’s all done on the Mac; let me show you how.
You create an ad hoc network via the Mac’s Wi-Fi Status menu. From the Wi-Fi Status icon in the menu bar, choose Create Network. If the icon is missing from the menu bar, go to System Preferences > Network. Click Wi-Fi and select the Show Wi-Fi status in menu bar checkbox. Give your ad hoc network a name, or accept the default which is your computer’s name (found in the Share Preferences panel). You configure your ad hoc network via the Create a Computer-to-Computer Network panel. Additionally, you can specify a Wi-Fi channel from the pop-up menu.
The default channel is 11, but if you think there may be reception problems from adjoining networks, you can choose a different channel. Select the level of security for your ad hoc network. The Security pop-up menu allows you to select password encryption.
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Ad hoc networks are not compatible with WPA or WPA2 protected networks. The only security protocol supported is the vintage WEP encryption, but it’s better than nothing. For short-term use, I don’t bother, as there are other measures in place that will keep out any prying eyes.