Differences

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--- airmon-ng [2010/10/06 15:12] – Added extra check kill troubleshooting tip darkaudax
+++ airmon-ng [2015/08/23 23:40] – [Typical Uses] Updated mister_x
@@ Line 17: / Line 17: @@
 ==== Typical Uses ====
-To start wlan0 in monitor mode: airmon-ng start wlan0
+===Check status and/or listing wireless interfaces ===
-To start wlan0 in monitor mode on channel 8: airmon-ng start wlan0 8
+  ~# airmon-ng
+  PHY	Interface	Driver		Chipset
+  phy0	wlan0		ath9k_htc	Atheros Communications, Inc. AR9271 802.11n
-To stop wlan0: airmon-ng stop wlan0
+===Checking for interfering processes===
+When putting a card into monitor mode, it will automatically check for interfering processes. It can also be done manually by running the following command:
+  ~# airmon-ng check
+  Found 5 processes that could cause trouble.
+  If airodump-ng, aireplay-ng or airtun-ng stops working after
+  a short period of time, you may want to kill (some of) them!
+    PID Name
+NetworkManager
+dhclient
+avahi-daemon
+avahi-daemon
+wpa_supplicant
+== Killing interfering processes==
+This command stops network managers then kill interfering processes left:
+  ~# airmon-ng check kill
+  Killing these processes:
+    PID Name
+dhclient
+wpa_supplicant
+===Turn monitor mode on===
+**Note**: It is very important to kill the network managers before putting a card in monitor mode!
+  ~# airmon-ng start wlan0
+  Found 5 processes that could cause trouble.
+  If airodump-ng, aireplay-ng or airtun-ng stops working after
+  a short period of time, you may want to kill (some of) them!
+    PID Name
+NetworkManager
+dhclient
+avahi-daemon
+avahi-daemon
+wpa_supplicant
+  PHY	Interface	Driver		Chipset
+  phy0	wlan0		ath9k_htc	Atheros Communications, Inc. AR9271 802.11n
+  		(mac80211 monitor mode vif enabled for [phy0]wlan0 on [phy0]wlan0mon)
+  		(mac80211 station mode vif disabled for [phy0]wlan0)
+As you can see, it created a monitor mode interface called wlan0mon and it notified there are a few process that will interfere with the tools.
+===Turn monitor mode off===
+  ~# airmon-ng stop wlan0mon
+  PHY	Interface	Driver		Chipset
+  phy0	wlan0mon	ath9k_htc	Atheros Communications, Inc. AR9271 802.11n
+  		(mac80211 station mode vif enabled on [phy0]wlan0)
+  		(mac80211 monitor mode vif disabled for [phy0]wlan0mon)
+And you might as well want to restart the network manager via
+  service network-manager start
-To check the status: airmon-ng
 ==== Madwifi-ng driver monitor mode ====
@@ Line 293: / Line 357: @@
 Source thread: http://forum.aircrack-ng.org/index.php?topic=6398.0 and http://forum.aircrack-ng.org/index.php?topic=8573
+==== SIOCSIFFLAGS: Unknown error 132 ====
+If you have an output similar to:
+  # airmon-ng start wlan0
+  Interface	Chipset		Driver
+  wlan0		Broadcom	b43 - [phy0]SIOCSIFFLAGS: Unknown error 132
+  				(monitor mode enabled on mon0)
+It indicates that RF are blocked. It needs to be enabled by using the switch on your laptop and/or using the following command:
+  rfkill unblock all
+See also http://ubuntuforums.org/showthread.php?t=1311886