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Thread: Hotels with wired internet only that block you making your own WLAN
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Old Apr 8, 2011 | 12:33 am
  #17  
LAX-1K
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For those of you wondering "How does the hotel know I'm using a router, even when I clone the MAC address?", I was told by an IT tech at one convention center that the system is designed to look at the ARP (address resolution protocol) table. That's how they know that you're using a router - even if you only have one device.

So, MAC cloning doesn't always get around the system
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