Router Charts

Router Charts

Router Ranker

Router Ranker

Router Chooser

Router Chooser

NAS Charts

NAS Charts

NAS Ranker

NAS Ranker

More Tools

More Tools

Wireless How To

Finding the Four-way Handshake

To make sure we captured a authentication handshake, we can use the network protocol analyzer Wireshark (formerly Ethereal). Wireshark allows us to view packet contents and sort by type of packet captured to pull out the WPA handshake.

Open up Wireshark (Backtrack > Privilege Escalation > Sniffers) and open the Kismet capture "dump" file (Kismet-<date>.dump) to view all the captured packets. The WPA four-way handshake uses the Extensible Authentication Protocol over LAN (EAPoL).

Using Wireshark, we can filter the captured packets to display only EAPoL packets by entering "eapol" in the filter field (Figure 7).

EAPoL filter applied to captured packets

Figure 7: EAPoL filter applied to captured packets

Here, we're basically looking for four packets that alternate source, client-AP-client-AP (I've highlighted them in red in Figure 7).

Now that we've confirmed that we've captured a four-way handshake it's time to perform the crack.

Amazon Top-Selling Wireless Routers

More Wireless

Featured Sponsors

Top Performing Routers

AC3200
AC2350
AC1900
AC1750
AC1200

Top Performing NASes

NoRAID
RAID1
RAID5

Over In The Forums

What is the best way to extend the Asus RT-AC87U? Can it be wirelessly extended or does it have to be connected via ethernet? Can it be exteneded by a...
Hi, I flashed yesterday a router to the Padavan & N56U firmware and every think had worked fine. Than I saw, that the UPNP Server had not updated the ...
Hmm, when I was looking for a new firmware for my router, I noticed that a "R7900" showed up on the list. Anyone know anything about this? If you ty...
Asus RT-N66U Firmware version 3.0.0.4.376.3861 1. Upgrade OpenSSL library to 1.0.0q 2. Fixed CVE-201301813 3. Fixed the XSS vulnerability on page Main...
Asuswrt-Merlin 378.53 is now available for all supported models. As finally the flow of bug fixing has started to slow down, I was able to spend time...

Don't Miss These

  • 1
  • 2
  • 3