Archive of tag ‘wireless’

Sunday 9 September, 2012 om 21.21 door Ad  

Brute-force attack on a WiFi network

WiFi is popular. People have such a network at home. ISP supply their bandwidth through WiFi and in many public places - like airports, trains, bars, hotels -  WiFi service is available. This post is the third in a series of discussing WiFi vulnerabilities. Earlier post were: >> >>

Sunday 9 September, 2012 om 17.13 door Ad  

Monitoring WiFi traffic of your neighbors

I will show how to monitor all WiFi network traffic in the range of your wireless adapter. In a previous post I have explained how to to get your wireless adapter recognized by a computer running Linux. In the following it is assumed you are running Ubuntu. Other Linux flavors require only obvious changes. >> >>

Saturday 8 September, 2012 om 19.36 door Ad  

What chipset is in your wireless adapter?

Wireless adapter
In case your operating system (OS) is a member of the Windows family any built-in wireless adapter will be recognized and functioning by the OS, and any external USB wireless adapter will either run out of the box, or run after you installed the driver from the CD coming with the USB adapter. In case of an Apple laptop the OS will also know how to deal with the wireless adapter. This simple install procedure is for 99% of the users a satisfactory situation. However, not if you want to fully explore all the wireless stations in your neighborhood. For an in-depth exploration you will have to be able to put your wireless adapter in "monitor mode", rather than in the default "managed mode". You will have to use as OS a member of the Linux family  if you want to put your wireless adapter in monitor mode. Of course your reason for using Linux could as well be that Linux is your favorite OS anyway. >> >>

Saturday 8 September, 2012 om 10.42 door Ad  

Attaching a time capsule and 3rd party router to a MacBook Air

In a previous post I explained that in order to connect an external 3rd party wireless router to a MacBook Air (MBA) the network settings (Open Network Preferences, Advanced, TCP/IP) of the MBA should be set to Using BootP. The protocol BootP is an older protocol that uses static ip-addresses rather than dynamic ones than as in DHCP. BootP worked fine for me, until I wanted to connect a Time Capsule (TC) to my MBA. Apple's TC  is essentially a an Apple wireless router with a built-in hard disk. The idea of a TC is that you always run in background the Time Machine program (configured in System Preferences)  which writes snapshots of your whole MBA computer to the TC disk. In such a way that you always have an updated backup in case of disaster. >> >>

Sunday 11 March, 2012 om 12.17 door Ad  

Connecting MacBook Air to a WiFi

I am very new to Apple with my recently acquired MacBook Air. I had great difficulties connecting it to a WiFi. It was not difficult to connect it to a Time Capsule, but a third party WiFi (SiteCom) gave problems. The MacBook Air did connect but there was no internet. As always I used DHCP for the TCP/IP connection and the DHCP ip-addresses were correctly set. After a few hours I changed the ip-address protcol  from from DHCP to BootP which is an option in the Advanced part of the network configuration tool. After that it worked perfectly. >> >>