What are the most effective ways to secure wireless networks in manufacturing?

1 Use strong encryption

Encryption is the process of converting data into a code that only authorized parties can decipher. It is one of the most basic and essential ways to protect wireless networks from unauthorized access. You should use the strongest encryption standard available for your wireless devices, such as WPA2 or WPA3. Avoid using outdated or weak encryption methods, such as WEP or TKIP, as they can be easily cracked by hackers.

2 Change default settings

Many wireless devices come with default settings that are easy to guess or find online, such as passwords, network names, or IP addresses. These settings can make your wireless network vulnerable to attacks, as hackers can use them to gain access or launch brute-force attacks. You should change these default settings as soon as you install your wireless devices, and use unique and complex passwords, network names, and IP addresses. You should also disable any features that you do not need, such as remote access, guest access, or WPS.

3 Segment your network

Segmentation is the practice of dividing your wireless network into smaller and isolated subnetworks, each with its own security policies and access controls. This can help you reduce the attack surface of your wireless network, as hackers cannot access the entire network if they compromise one subnetwork. It can also help you limit the impact of an attack, as it can be contained within a subnetwork. You can segment your network based on different criteria, such as function, location, or device type. For example, you can create separate subnetworks for your PLCs, your laptops, and your cameras.