A perfect example of this is to use a cellular-connected smartphone that is configured in Wi-Fi ad hoc mode so that Wi-Fi capable laptops can connect to the Wi-Fi ad hoc network to gain internet access over the smartphone's cellular internet link. But ad hoc mode might be a good option for a user setting up a temporary wireless network between a small number of devices. For example, users who want a WAP to act as a permanent access point should choose infrastructure mode with an on-site or cloud-based wireless LAN (WLAN) controller. When should you use an ad hoc wireless network?ĭeciding when to employ ad hoc versus infrastructure mode depends on the use. The use of more sophisticated network protocols and network services found on infrastructure-based wireless networks, such as IEEE 802.1x authentication, usually are not suitable or necessary for short-lived ad hoc networks. Ad hoc networks are also commonly set up to provide temporary wireless network access created by a computer or smartphone. Typically, Wi-Fi networks configured for infrastructure mode are created and managed using equipment such as Wi-Fi routers or a combination of WAPs and wireless controllers that provide the necessary network intelligence. In fact, Wi-Fi access points can be configured to work in either ad hoc or infrastructure mode as well. It's important to note that not all ad hoc networks are built using a PC or smartphone. Makeshift by nature, ad hoc wireless networks are most useful when wireless infrastructure isn't available - for example, if there aren't any access points or routers within range and cabling cannot extend to reach the location where additional wireless communication is needed. The individual wireless endpoints connected to an ad hoc network forward packets to and from each other. Instead of relying on a wireless base station, such as a wireless access point ( WAP) or Wi-Fi router, an ad hoc device takes on this role and coordinates the flow of messages to each node in the network. 12 types of wireless network attacks and how to prevent them.

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