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

Hello all try this asus merlin firmware mod https://www.mediafire.com/folder/05psguze7t8gs#myfiles This firmware is better than original asuswrt mer...
Hi all, I have an asus RT-AC87R running merlin 378.56_2. It runs ok but for the past year i have to unplug the router and power back on. everything f...
Sorry to beat a dead horse, but just wondering if everyone still jumps on the old OpenDNS bandwagon, or has that ship sailed and everyone sticks with ...
Hi. I'm revamping my backup strategy as the amount of data I need to hold has increased over the last couple of years. In a search for an "off-site"...
Hey everyone. I've been struggling with this for a couple of days now and I can't figure out what I'm doing wrong so I'm missing something obvious my...

Don't Miss These

  • 1
  • 2
  • 3