The iwconfig command is used to provide wireless NIC configurations, including settings like SSID, encryption information, etc. To connect to a wired network, we simply assign an IP address and subnet mask with the ifconfig utility. A wireless network connection requires the iwconfig and iwlist utilities.
Syntax
The syntax of the iwconfig command is:
# iwconfig [options] [interface]
iwconfig Command Options
The following table describes some common iwconfig command options:
| Option | Used To |
|---|---|
| nick {name} | Set a nickname for the NIC. |
| mode {mode} | Set the operating mode for the NIC that corresponds to the network topology. |
| freq {number} | Set the Wi-Fi frequency used by the NIC |
| channel {number} | Set the Wi-Fi channel used by the NIC. |
| retry {number} | Set the maximum number of MAC retransmissions for the NIC. |
iwconfig Command Examples
1. Show the parameters and statistics of all the interfaces:
# iwconfig
2. Show the parameters and statistics of the specified interface:
# iwconfig interface
3. Set the ESSID (network name) of the specified interface (e.g. eth0 or wlp2s0):
# iwconfig interface new_network_name
4. Set the operating mode of the specified interface:
# iwconfig interface mode ad hoc|Managed|Master|Repeater|Secondary|Monitor|Auto
5. To configure Eth1 to operate in monitor mode, type this:
# iwconfig eth1 mode monitor