When securing a wireless network, why is it advisable to assume effectively infinite distance?

The concept of assuming effectively infinite distance when securing a wireless network is closely related to the use of directional antennas and the potential for wireless signals to be intercepted over long distances. By considering that the signal may be accessible from far away, network administrators can better implement security measures to protect the wireless network from unauthorized access.

In particular, directional antennas can indeed extend the range of a wireless signal, which can inadvertently allow individuals outside the intended coverage area to connect to or detect the network. This assumption encourages robust security practices, such as using strong encryption standards, setting up strong authentication mechanisms, and enabling features like MAC address filtering. By operating under the premise that the network's signal could potentially reach beyond its intended limits, network administrators are better prepared to address vulnerabilities and safeguard the network against external threats.

This approach underscores the importance of comprehensive security measures in wireless networking, recognizing that signals can travel further than anticipated and that precautions must be taken to secure the broader range of potential access points.