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

Win This!

TP-LINK Archer C9 AC1900 Router

 

You could win a TP-LINK Archer C9 AC1900 Router

Learn How!

Top Performing Routers

AC3200
AC2350
AC1900
AC1750
AC1200

Top Performing NASes

NoRAID
RAID1
RAID5

Over In The Forums

Good morning, I've been living off of cellular internet for over a year. Where I am located, the options are limited - DSL (which maxes out at 1.3 Mbps down)...
Good Day, The official first public release - 3.0.0.4.376_1779 - is now or will shortly be available for update via the Firmware Upgrade option under the Administration tab. Most of...
I am opening this thread to start a discussion on how Smart Connect Rues can be adjusted. I have spent some time trying different things and have come up...
Howdy folks, Asuswrt-Merlin 378.50 is now available for download, for all supported models. This build introduces a pretty long list of changes. Due to some of these changes Asus did (and...
Probably a stupid question. I just unboxed my RT-68U and read about firmware issues. I also downloaded Merlin 378.50 and that seems pretty popular here. Can someone...