Technology Insights

OSX Burn Image Message: The Disc Drive Is Busy. Please Choose Another Drive.

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When attempting to burn a DVD tonight I was getting a message from within the OSX Disk Utility stating that the Disc Drive was busy. At first I thought it must be a DVD that was not compatible with the DVD burner however I attempted to use three different types of DVD’s with the same message. Finally I realized that I had VMWare Fusion running and one of the VM’s I was using at the time was sharing the Disc Drive with the host OS or OSX. Below are more details about what the message from the OSX Disk Utility will look like and how to remove the disc drive from being shared with a VMWare image.

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Information Security

Strip WPA Capture File Down To EAPOL Packets Based On BSSID Instead Of ESSID

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In the past we have written a couple articles on using tshark to strip WPA capture files down to a specific ESSID or SSID but in some cases it can be more useful to strip the capture down by BSSID or MAC address of the WAP. Isolating packets by BSSID or WAP MAC address is useful in a scenario where a wireless deployment has numerous WAP’s and you have captured a specific SSID’s traffic from more than one WAP. Below is information on how to strip down a capture file based on BSSID and information on capture size before stripping the file down.

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Information Security

pfSense IPSec Road Warrior OSX Client And Configuration

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If you are not hip to pfSense I suggest you check it out. It is an open source firewall that is making waves in InfoSec. The pfSense guys have a great howto for configuring IPSec VPN on the pfSense firewall as well as making connections via a freeware Windows IPSec VPN client called Shrew Soft which can be read by clicking here. The only item lacking in the article is a recommendation for a Mac OSX client as well as configuration tips for a Mac OSX client which is the sole point of this article. Below is information about where to download a freeware Mac OSX IPSec VPN client and then the necessary configuration to make a connection to the suggested settings noted in the howto of the pfSense web site.

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Technology Insights

Install ATRPMS Yum Repository On CentOS Linux

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The ATrpms repository provides many bleeding edge software packages so if you have a development server where you install new apps this repo can be very useful. The instructions are not 100% clear about how to install this repository on CentOS Linux which would also be the same on RedHat Linux but not on Fedora Linux. Anyhow the example used on the ATrpms site relates to Fedora so the repo file needs to be modified to work on CentOS as noted below.

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Technology Errors

CentOS Linux Configure Script Error – No package ‘libdaemon’ found

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While running a configure script before compiling an application on CentOS Linux I received an error regarding libdaemon which caused the configure script to fail. Using YUM I was able to list the available packages that included libdaemon in the name, install one, and then move past that error in the configure script. Below I show how to list packages using YUM with libdaemon in the name and then show example output of installing libdaemon-devel which is the package needed by the configure script.

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