thoger
commented
7 years ago There is an obvious problem in your ifconfig invocation clearly indicated by the error message you get: invalid ether address. All digits need to be hex digits.
You can try use ifconfig (or ip) with correct arguments and see if they fail the same way. If they do, the problem most likely lies in driver/network device and not maccahanger.
ifconfig wlan0 hw ether 22:33:44:55:66:77
ip link set wlan0 address 22:33:44:55:66:77
Hello all. I am a fairly new user to Linux and have been using a virtual machine for the past few months in order to practice. I recently bought myself an HP stream 11 in order to do a fresh install of Kali Linux and try and progress my skills with actual hardware, After many trials and tribulations and a very steep learning curve, namely getting my WiFi card to work properly, I finally managed to set it up. I decided to practice using macchanger as i'm hoping to progress into a Network Security/ PenTesting job role and decided to start off basic. Yet, to no great surprise, I have hit another hurdle. I will post the code below for a better understanding.
`root@kali:~# ifconfig lo: flags=73<UP,LOOPBACK,RUNNING> mtu 65536 inet 127.0.0.1 netmask 255.0.0.0 inet6 ::1 prefixlen 128 scopeid 0x10
loop txqueuelen 1 (Local Loopback)
RX packets 160 bytes 12987 (12.6 KiB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 160 bytes 12987 (12.6 KiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
wlan0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500 inet 192.168.0.19 netmask 255.255.255.0 broadcast 192.168.0.255 inet6 fe80::5b7:6a12:eb0b:8cda prefixlen 64 scopeid 0x20 inet6 fdc9:d48e:53e5:0:443c:2c2e:5ce2:984 prefixlen 64 scopeid 0x0
inet6 2a02:c7d:8017:8200:22bf:364f:35e:a03d prefixlen 64 scopeid 0x0
ether XX:XX:XX:XX:XX:XX txqueuelen 1000 (Ethernet)
RX packets 27802 bytes 18820989 (17.9 MiB)
RX errors 0 dropped 0 overruns 0 frame 10752
TX packets 26472 bytes 3586268 (3.4 MiB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device interrupt 16
root@kali:~# lsusb Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub Bus 001 Device 004: ID 0a5c:216c Broadcom Corp. BCM43142A0 Bluetooth Device Bus 001 Device 003: ID 05e3:0610 Genesys Logic, Inc. 4-port hub Bus 001 Device 002: ID 05c8:036e Cheng Uei Precision Industry Co., Ltd (Foxlink) Webcam Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub root@kali:~# ifconfig wlan0 down root@kali:~# macchanger --random wlan0 Current MAC: XX:XX:XX:XX:XX:XX (unknown) Permanent MAC: XX:XX:XX:XX:XX:XX (unknown) [ERROR] Could not change MAC: interface up or insufficient permissions: Too many open files in system`
I get that error message each time and the MAC Addresses stay the same. I have also tried using this method.
`root@kali:~# ifconfig wlan0 down root@kali:~# ifconfig wlan0 wlan0: flags=4098<BROADCAST,MULTICAST> mtu 1500 inet 192.168.0.19 netmask 255.255.255.0 broadcast 192.168.0.255 ether XX:XX:XX:XX:XX:XX txqueuelen 1000 (Ethernet) RX packets 28535 bytes 19040524 (18.1 MiB) RX errors 0 dropped 0 overruns 0 frame 11715 TX packets 27111 bytes 3677762 (3.5 MiB) TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0 device interrupt 16
root@kali:~# ifconfig wlan0 hw ether 0p:6t:j6:7h:o3:r9 0p:6t:j6:7h:o3:r9: invalid ether address.`
Now the latter method i'm not sure if I have even used right as I am a novice. The reason my WiFi adapter is mentioned in the title is that I recall reading on a forum somewhere that some Broadcom cards don't work with macchanger but I can't seem to find any specifics. Please advise.