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Wireless Networking Concepts
Unfortunately, wireless networks have also introduced some problems:
■ Because a physical connection isn’t required, attackers can connect to wireless networks from outside your facility (such as from your car park, other offices in the same building, or even buildings hundreds of feet away).
■ By default, most wireless access points use neither authentication nor encryption. This allows any attacker who can send and receive a wireless signal to connect to your network. Additionally, attackers can capture data as it crosses the network.