Computer networks can be classified in different ways. One approach is to define the type of network based on its geographical extent. For example, local area networks (LANs) normally cover a very small area, which can be that of a single house or office, while wide area networks (WANs) reach the extent of entire cities and states, they can also extend to more parts of the world. The Internet is the largest public geographic network in the world.
Steps
Step 1. Use the WEP algorithm
This is the acronym for Wireless Encryption Protocol. It is a network protocol for encrypting data transiting over a Wi-Fi network. You should never forget to use this tool, otherwise anyone - with the necessary knowledge - will have instant access to all data transiting on the Wi-Fi network in question.
Step 2. Change and disable plaintext sending of the SSID
SSID stands for Service Set IDentifier. This is the identification of the Wi-Fi network in question, which is transmitted by the access point or wireless router that manages the Wi-Fi connection to all potential users who want to connect to the network. Each access point or wireless router must have its own unique SSID. Also, if your Wi-Fi network is also reachable by users outside your group, disable all access points or wireless routers from sending the network's SSID in clear text. This way, your network will no longer appear in the list of available Wi-Fi networks in the area, even if it is fully active.
Step 3. Disable the DHCP service
In this way, if a hacker wants to try to break into your network, to connect he would first have to find out the TCP / IP parameters, namely a valid IP address, the subnet mask and the gateway address.
Step 4. Disable or change the SNMP protocol settings
Configure the settings of this protocol as private, or simply disable it. Otherwise, hackers will be able to use the SNMP protocol to obtain meaningful information about your Wi-Fi network.
Step 5. Use an access list
For greater security of your wireless network, if the device that manages it (access point or wireless router) allows it, create a list of devices that can access the network. In this way, you will be able to determine with extreme precision the complete list of all the machines that can have access to your Wi-Fi network. To upload and keep your access point access list updated, you can use the Trivial File Transfer Protocol (TFTP).
