Access points are central to network infrastructure, particularly when creating a wireless network environment. They enable Wi-Fi devices to connect to a network without cables, facilitating mobility and flexibility. Beyond just providing a wireless connection, access points can offer additional functionalities such as network management, security features like WPA2 encryption, and the ability to handle many devices and traffic loads efficiently.
The configuration and management of access points are critical. Poorly secured access points can be exploited by attackers for various malicious activities such as eavesdropping on network traffic, conducting man-in-the-middle attacks, or gaining unauthorised access to a network.
Access points should be set up to enhance security with robust encryption methods, secure management interfaces, updated firmware, and isolated networks (VLANs) for guest access. Security measures, such as hiding the Service Set Identifier (SSID), implementing network access controls, and using strong passwords, are essential to safeguard wireless networks from unauthorised access and potential breaches.
What is a wireless access point?
A wireless access point is a device that connects to your router, typically by an ethernet cable. It allows wireless devices to connect to a wired network without relying on cables or wires. This leads to less clutter and less time spent setting up a connection, making it more efficient.
Wireless access points have many benefits, such as connecting to the network wherever you are as long as you’re within the access point’s coverage area. Adding new users and allowing guest users access to your wired network becomes much more streamlined. Overall, a wireless access point makes everything more convenient.
Key Characteristics:
- Hardware device facilitating wireless connection to a network
- Broadcasts a Wi-Fi signal to enable device connectivity
- Can offer layered security features for network protection
- Upon misconfiguration or lack of security, it can become a vulnerable point of attack
Examples:
- Real-World Example: In a corporate office, access points are installed throughout the facility to provide employees with Wi-Fi connectivity to the internal network, enabling them to work wirelessly from laptops, tablets, and smartphones.
- Hypothetical Scenario: A coffee shop sets up an access point to offer free Wi-Fi to customers. The access point is configured to segment the guest traffic onto a separate VLAN with its own SSID and encryption settings to protect the business’s internal network.
Related Terms:
- WPA2 Encryption: A security protocol commonly used by access points to secure wireless networks.
- SSID (Service Set Identifier): A unique ID that consists of 32 characters and is used to name wireless networks.
- VLAN (Virtual Local Area Network) is a network strategy for segmenting a physical network into different broadcast domains. This strategy can be applied within access points to enhance security.
- Man-in-the-Middle Attack: An attack can occur due to insecure access point configurations, where an attacker secretly intercepts and possibly alters the communication between two parties.
Learn better by watching a video? Here is a YouTube video explaining the concept, by the fantastic Linus from Techquickie.
