I am new to cooja and would like to do this:
a) enable promiscuous mode to detect my neighbours' packets.
b) count the number of packets sent by the parents of neighbouring nodes.
I've read some solutions about promiscuous mode but I can't figure it out.
Related
When I use Wireshark to capture traffics with my wlan card with monitor mode already set, it only displays 802.11 frames. However, if I use Wireshark with managed mode wlan(promiscuous mode), it certainly displays 802.3 frames.
I searched for some related information and found out that 'network bridging' allows devices to convert 802.11 wireless packets to 802.3 packets. In case of packet capturing, pcap allows conversion.
(link: How to real time convert wireless packet(802.11) to Ethernet packet(802.3) in windows?)
So, Why is 802.11 to 802.3 frame conversion impossible when using monitor mode(not associated to the wireless network)?
Below are pictures of the situation. Thank you in advance.
Promiscuous mode packet capture
Monitor mode packet capture
For one thing, not all 802.11 packets have Ethernet equivalents; only data packets do. In monitor mode, in addition to data packets, control and management packets can be captured - you're seeing those types of packets in your monitor-mode capture.
For another thing, when capturing in monitor mode on a "protected" network (WEP, WPA), data packets are encrypted (to protect them from being sniffed), and can't be converted to Ethernet packets until they're decrypted. Under some circumstances, Wireshark can decrypt them, but Wireshark doesn't do any conversion from 802.11 to 802.3 in any circumstances - when not capturing in monitor mode, the 802.11 adapter converts data packets to 802.3 packets after decrypting them, and doesn't show non-data packets to the host.
After setting up promiscuous mode on my wlan card, I started capturing packets with wireshark. But only broadcast packets or packets destined to my localhost were captured. I cannot find the reason why.
Also, after changing to monitor mode, captured packets all had 802.11 headers unlike promiscuous mode where Ethernet frames were captured. I know devices communicate with 802.11 protocols when wireless. But how is it possible that packets captured in wireshark is displayed in Ethernet frames? (when not in monitor mode)
I' using wireshark 2.2.3, I want to capture all wireless network traffic using wireshark.
I've tried from wireshark with:
Edit -> Preferences -> Protocols -> IEEE 802.11 -> New -> wpa-psk
and in the Key box: "AP:password", But I get an Invalid key format error.
I don't find to set the promiscuous mode.
Promiscuous mode setting - trying both on and off in monitor mode.
Any body please help to get the wireless network traffic to get my all the request to capture to my team members in the same network.
sudo ifconfig eth0 promisc
[sudo] password for tb-desktop2:
tb-desktop2#tbdesktop2:~$ netstat -i
Kernel Interface table
Iface MTU Met RX-OK RX-ERR RX-DRP RX-OVR TX-OK TX-ERR TX-DRP TX-OVR Flg
eth0 1492 0 117205 0 0 0 96232 0 0 0 BMPRU
lo 65536 0 156470 0 0 0 156470 0 0 0 LRU
How to enable monitor mode mon0?
sudo 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
1081 NetworkManager
1090 avahi-daemon
1107 avahi-daemon
1317 wpa_supplicant
1853 dhclient
Process with PID 1853 (dhclient) is running on interface wlp6s0
Interface Chipset Driver
wlp6s0 Atheros AR9565 ath9k - [phy0]
Still I didn't get the network packets.
in the Key box: "AP:password", But I get an Invalid key format error.
If you're trying to enter a password, you need to select wpa-pwd, not wpa-psk. You may also wish to display the Wireless Toolbar via View -> Wireless Toolbar. You can add decryption keys from the toolbar using Decryption Keys... -> New -> Type:WPA-PWD, Passphrase:TBD,SSID:TBD.
If you have an adaptor that integrates with Wireshark, such as an AirPcap adaptor, you can set the Wireless Settings from the toolbar as well.
You can enable promiscuous mode by double-clicking the applicable interface in the main Wireshark page's interface list or through Capture -> Interfaces -> Options or from Preferences -> Capture -> Interfaces: Edit....
All that aside, I'm not sure you'll necessarily be able to capture what you want without enabling monitor mode. I would recommend visiting the Wireshark WLAN (IEEE 802.11) capture setup wiki page and reading the information available there.
To capture the traffic just set your antenna in monitor mode, Edit -> Preferences -> Protocols -> IEEE 802.11 is to decrypt traffic, which is another subject.
Type sudo airmon-ng check to check which processes might cause trouble to set your antenna in monitor mode. (You got five in the example you showed).
To kill these processes you can do it manually with kill <Process ID> or you can type sudo airmon-ng check kill
And once everything seems clear, type again sudo airmon-ng start wlan0. To verify if it worked you can check with iwconfig and in wlan0 or wlan0mon MODE should say MONITOR.
There your antenna will capture ALL wireless traffic on the channel it is and you can see that through Wireshark.
I want to analyze networks traffic but not by connecting it Just
switch on wifi and sniff the packets (IEEE 802.11 Frames)
in promiscuous mode
I have tried libpcap but it may be internally changing datalinktype as i am giving wifi interface in
descr=pcap_open_live("en1", MAXBYTES2CAPTURE, 1, 512, errbuf);
(as we know mac OS x have en1 as wifi interface )
now when i do this
printf("%s", pcap_datalink_val_to_name( pcap_datalink(descr)));
It gives me result "ethernet"
I have tried to capture packets using wireshark without connecting to my wifi network and it worked!!
I was able to capture Beacon , Acknowledgement and Authentication frames without connecting to my wifi network.
now:
do I have to make a network card driver for that or libpcap can do that ?if yes how?
Is wireshark making some kind of driver for that? if yes please help me to locate that in it's source code.
I have tried Apple's CFNetwork but it too can't capture without connecting to the network.
It will be very helpful if i get some suggestion on some user space code as kernel level coding is a little tuff :(
I am coding on MacOS 10.7 in xCode 4.5.1
Update:
I am already doing this:
descr=pcap_create("e1", errbuf);
pcap_set_rfmon(descr, 0);
pcap_set_promisc(descr, 0);
pcap_activate(descr);
descr=pcap_open_live("en1", 2048, 1, 512, errbuf);
And yes there is a little monitor icon at the wifi and I can sniff the
packets but only when I connect to the network, I want to do the same
when I am not connected to wifi like capturing Beacon and
Acknowledgment Frames means packets through which our network card detects available wifi network
If you're running on Snow Leopard or later (which you are, as you're running Lion), you should use the new pcap_create()/pcap_activate() APIs, and turn on monitor mode by calling pcap_set_rfmon() between the pcap_create() and pcap_activate() calls.
That's what Wireshark 1.6.0 and later do if you check the monitor mode checkbox, and what tcpdump 1.0.0 and later, and TShark and dumpcap in Wireshark 1.6.0 and later, do if you specify the -I command-line flag.
By default, Wi-Fi interfaces on many OSes, including but not limited to OS X, supply Ethernet headers, not 802.11 headers, which is why pcap_datalink_val_to_name(pcap_datalink(descr)) is reporting Ethernet headers. On Linux and OS X, you have to go into monitor mode to get 802.11 headers; on *BSD, you can get 802.11 headers without going into monitor mode.
You do not need your own driver to go into monitor mode on OS X; Wireshark does not supply its own drivers.
I want to sniff wifi packets with wireshark but monitor mode seems to fail. I'm using backtrack 5 and an alpha AWUS036H wifi usb card, i try to sniff my own box without encryption.
Here is what i'm doing to activate monitor mode :
root#root:~# airmon-ng start wlan0
wich seems to be working :
root#root:~# iwconfig mon0
mon0 IEEE 802.11bg Mode:Monitor Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:on
However when i start capturing on mon0 in wireshark i'm only getting broadcast packets.
In capture options the "capture packets in monitor mode" option is grayed out.
I do not understand what's going on. Any Ideas ?
What channel number is your mon0 interface set to?