All WLAN devices on the home network must be able to encrypt the connection to the router via the standard WPA or better still WPA2. Ural devices, which in the best case encode over the long cracked standard WEP, are disposed of. Even older devices of the IEEE standard 802.11g, which support only encryption mode WPA (TKIP), should no longer be used on the home network.
Tip 1: Select the strongest encryption in the router
In the WLAN settings of your router, switch from the most pre-set WPA / WPA2 encryption to the currently most secure WPA2 mode. In the user interfaces of some home network routers this encryption mode is often referred to as WPA2-PSK or WPA2 (CCMP).
Tip 2: When you are sleeping, Wi-Fi uses only attackers
Important: The strongest encryption is useless if the password is too weak or in a dictionary. Your WPA2 passphrase should be at least 20 digits and should consist of digits, letters (large, small) and special characters. Use a password generator
Tip 3: Set up a separate WLAN for your guests
When you sleep, you usually do not need a wireless connection. The most current routers therefore offer the possibility to automatically switch off the WLAN for an arbitrarily selectable period of time. The name for this function varies from manufacturer to manufacturer, often referred to as a time switch or a night switch.
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In the popular Fritzbox models of AVM with current firmware activate the temporary WLAN peace in the user interface under WLAN / time switch. There, you should first use a checkmark before the time switch for the wireless wireless network. With the option Turn off WLAN according to schedule you set the night switching separately for each weekday. Simply hold down the Mapping key if you want to mark a longer period of time blue (WLAN active) - or remove the marking again.
More and more frequently, friends ask for a WLAN access. However, if you issue your own WLAN access data, the guest has access to all other devices and services in the home network. Fortunately, all modern router models offer a so-called guest access.
The guest access spans a separate WLAN with its own name and its own encryption, which is completely separated from the rest of the home network. The user registered in the guest network has access to the Internet, but no access to NAS or the Bürorchner. In the Fritz box is the furnishing over the menu WLAN / guest access. Here, you first activate the guest access. In the Set up guest access menu, you give the guest WLAN a striking name (SSID) - or leave it at the default.
In the Security section, also enable WPA + WPA2 encryption, and assign a secure wireless network key. Practical: These access data can be printed together with a QR code as an information sheet for your guests.
Many router manufacturers now deliver their devices with pre-encrypted radio network. The WPA (2) password for each device is additionally printed on the router housing. If you really want to be sure, you should replace the manufacturer's default WLAN password with your own new password - see also tip 1. In addition, assign an at least 12-digit password to access the web interface of your router. This is how to prevent a malicious computer from making changes to your home network.
Even if your home network is securely encrypted, you should get an overview of what devices are connected to the router. Each router keeps a list of all active devices. With the Fritz box you find this list under WLAN / Funknetz under well-known WLAN devices. In the Properties column, read out which devices are currently connected. Occasionally, check to see if you can assign all the devices you see.
Tip 4: Customize the WLAN factory settings
Tip 5: Check your WLAN for unwanted participants
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