How can I find out what type of security a wireless access point (essid) is using? wep/wpa/wpa2 (preferably using commandline tools)
You can use the
The output from iwlist will show each 'Cell' (or access point) that it finds, including the following details about the encryption type:
This indicates that a network near me is using WPA2, using a pre-shared key (PSK).
Now, to list specific details about a connection, we can do
Thus we know , this wifi uses WPA protection.
Another hint is the following line:
Now, how do we put this into the same script ? If you have only one connection established ,
Here we merely manipulate
If you have wifi connection established but also Ethernet connected,
The above commands translate in 15.04 as follows:
Side note: in Ubuntu 14.04 there is
nmcli command-line client for NetworkManager can be used to view security types of nearby wireless access points.
Result will show up as following: