Please I have problem on my mon0 interface I try different ways but still couldn't fix it. I want to turn on mon0. and here is the outcome.
# airmon-ng start wlan0 Found 4 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 722 avahi-daemon 730 avahi-daemon 775 NetworkManager 834 wpa_supplicant Interface Chipset Driver wlan0 Broadcom wl - [phy0]mon0: ERROR while getting interface flags: No such device (monitor mode enabled on mon0) # airodump-ng mon0 Interface mon0: ioctl(SIOCGIFINDEX) failed: No such device root@mbfada-Lenovo-G400:/opt/aircrack-ng# airodump-ng wlan0 ioctl(SIOCSIWMODE) failed: Operation not supported ARP linktype is set to 1 (Ethernet) - expected ARPHRD_IEEE80211, ARPHRD_IEEE80211_FULL or ARPHRD_IEEE80211_PRISM instead. Make sure RFMON is enabled: run 'airmon-ng start wlan0 <#>' Sysfs injection support was not found either. # airmon-ng start wlan0 Found 4 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 722 avahi-daemon 730 avahi-daemon 775 NetworkManager 834 wpa_supplicant Interface Chipset Driver wlan0 Broadcom wl - [phy0]mon0: ERROR while getting interface flags: No such device (monitor mode enabled on mon0) 2 Answers
Ubuntu's network manager is conflicting. You can turn set it to manual using
sudo stop network-manager echo "manual" | sudo tee /etc/init/network-manager.override After that you should be able to run
sudo airodump-ng start wlan0 Alternatively, you could also set
unmanaged-devices=interface-name:wlan0;interface-name:mon0 or for a hw address
unmanaged-devices=mac:11:22:33:44:55:66 This can be changed in /etc/NetworkManager/NetworkManager.conf under section keyfile. See also
man NetworkManager.conf Simply killing the processes works. You shouldn't need to unmanage the interface:
As an example:
kill 722 730 775 834 airmon-ng start wlan0 The numbers (pid in the kill) will be different most of the times.
