Flying Frames

Using wireshark dumpcap to sniff links with huge traffic for longer period of time, e.g. WLC Most of the times, when we mirror WLC ports, we face issues where customer hooks up a laptop to capture with wireshark installed on it. But the moment we start mirroring, the laptop freezes, due to excessive load on … More Wireshark dumpcap to sniff links with huge traffic

Free edition lets you monitor 5 hosts:- http://www.kiwisyslog.com/free-edition.aspx after installing:- File>setup>inputs Remove 255.255.255.255 and add IP of the device. Make sure you have the right facility defined under:-   By default its local7. Ensure that you do not have the “lock” icon, under the file menu, in top left hand corner, enabled in the Kiwi … More Kiwi syslog server notes

1. Try to stick to 802.11a. 2. For 802.11a disable all lower data rates below 12 Mbps. 1, 2, 5.5, 9, 11. Make 12 and only 12 Mbps as the mandatory. Optionally if high density environment, disable 36 Mbps and higher rates. Set everything else as supported. 3. Separate voice WLAN from data WLAN. 4. Be … More VoWLAN configuration notes

Pre site survey thoughts Type of end client. Will it do nomadic movement or roaming? What will be their density. Type of application. Data networks usually require only 10 to 15 percent overlap. In this configuration, typical AP separation in open space is 120 to 130 feet (37 to 40 meters).

Kali Linux & over the air promiscuous capture Based on the following link:- https://supportforums.cisco.com/blog/12200881/using-live-linux-distro-get-wireless-packet-capture I was trying to use kali linux in lab windows machine, and thought of sharing my observations. Kali has inbuilt wireshark, tcpdump, dumpcap, airmon-ng support. So you can have wireless frames scrolling right in front of you in wireshark, like you … More Kali linux to sniff over the air traffic

The proliferation of network devices, results into many ways, a user can get into your network, with so many kind of devices. So many wifi devices around, and if your regular employee barges in with near about 5 wifi capable devices, you should not be surprised. How would you keep them at bay? What kind … More Why ISE?