When the following is configured:
```
vyos@vyos# show interfaces wireless
wireless wlan0 {
channel 0
hw-id 04:c0:01:00:00:01
physical-device phy0
security {
wpa {
passphrase VyOS-WIFI-123
}
}
ssid VyOS-WIFI
type access-point
}
```
VyOS will have an "open" WIFI with SSID VyOS-WIFI. In order to protect the WiFi one must explicitly set: `set interfaces wireless wlan0 security wpa mode <wpa|wpa2|both>` - this should be the default (or what did VyOS 1.2 do?)