Since wireless networks are common in both businesses and residences, pinpointing which network belongs to your target can be difficult, especially if they don't identify their organization in the ESSID. On the other hand, if you are expected to identify the network, this can be much more difficult. In these cases, identification is relatively simple. On some engagements, you will be provided with the Extended Service Set Identifier (ESSID) of the wireless network and/or MAC addresses of the access points your target has deployed. With wireless penetration tests, organizations often want you to locate or identify their network prior to beginning the test, in order to simulate what a real attacker that was targeting their network could do. One major difference is that with a wired network, you generally have a defined target IP range, or, if the test is internal, plug into an Ethernet port on your target's network. Many of the concepts for penetration testing wireless networks are the same as those for wired networks. Brian Baker, in WarDriving and Wireless Penetration Testing, 2007 Target Identification