Earlier while troubleshooting a possible issue with VMWare Player on Ubuntu Linux I needed to sniff broadcast traffic. The goal was to see if there were multiple MAC addresses sending out broadcast traffic after VMWare Player was installed on Ubuntu even without a VM actually running. Below is a quick example of how to sniff…
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Recently I wanted to change the splash screen for BackTrack 5r3 which runs on a base of Ubuntu Linux 10.04 codename Lucid. To do this follow the steps below so each time your computer reboots you can have the splash screen of your choice. Do keep in mind that if the kernel is updated you…
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If you have a Asterisk system being used for sending and receiving faxes and all of the sudden the faxes all start failing with various error messages the first thing that should be checked is the status of either the analog telephone lines, the T1’s, or the SIP provider you are using as a outbound…
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In the past I have used likewise-open to join Linux servers to a Windows domain controller. There were always at least some issues using likewise-open and even though it was always possible to get it working it was always a pain. Today I started the process and of course ran into an error which is…
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I updated my iPhone to iOS Beta 6 a couple weeks back and ever since I have not been receiving visual voicemail notifications. Initially I thought people were just not leaving me voicemails but once I finally called into voicemail by holding the number one on my iPhone keypad to check voicemail I realized I…
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Earlier when installing snort on a CentOS Linux server I ran into a configure error. The error related to the fact that libdnet was not located on the server and while it was installed I did not have the libdnet-devel package installed. Below is the sample output from the configure error, an expandable complete output…
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Earlier while analyzing a Linux server it was pointed out to me that the Apache logs were filling up with constant connections requesting domains that were not configured on the server. To me it looked as if a load balancer somewhere was misconfigured and sending traffic to our IP address by mistake but I needed…
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The below code snippet was used to add SSH users to RackSpace cloud CentOS Linux nodes being used as application servers and managed via RightScale. The SSH users were required during a testing phase so they could look through logs and make modifications to specific configuration files, etc. There are three things that have to…
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Recently I was working on a project that was using RightScale to manage RackSpace cloud nodes. One of the requirements of the project was to have application nodes scale automatically thus they were required to automatically install software, configure settings, and start services automatically on the RackSpace CentOS nodes being used. Most everything was fairly…
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