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.

More Wireless

Featured Sponsors



Support Us!

If you like what we do and want to thank us, just buy something on Amazon. We'll get a small commission on anything you buy. Thanks!

Top Performing Routers

AC3200
AC2600
AC1900
AC1750
AC1200

Top Performing NASes

NoRAID
RAID1
RAID5

Over In The Forums

View attachment 6902 ‚ÄčAmped Wireless announced the availability of its Artemis-EX AC1300 MU-MIMO Wi-Fi Range Extender. Positioned as "affordable"...
I would like to change my mac addresses in the bootloader but the cfe file I have downloaded from the router via telnet do not have any way to edit it...
Hello, using latest merlin on my RT-N66U. I tried to forward port range 51001 - 51250. On website canyouseeme.org it shows that ports are blocked. Tr...
This community is innovative and clever: I look forward to good-interesting responses. Goal: identify criteria for choosing an unmanaged switch. Seek...
While I was googling about the online shopping pros and cons, I had come across a blog "3 tips to protect your payment during online purchases", https...

Don't Miss These

  • 1
  • 2
  • 3