Technology Insights

Asterisk Check T1 Status Because Faxes Sent Via Hylafax Fail

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 proxy. Below I describe some of the error messages that may be received via Hylafax in this example as well as how to check the status of the T1’s themselves to make sure that there are no alarms present before you have to get into troubleshooting Hylafax in detail.

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Technology Insights

dpkg: error processing likewise-open (–configure), Join Linux Server To Windows Domain Controller

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 noted below in more detail so I did some research and came across centrify which ended up being much easier and worked without issue. Use the instructions below to install, configure, and use centrify to join a Linux server to a Windows DC.

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Technology Insights

iPhone Visual Voicemail Not Working With iOS Beta 6

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 had 25 voicemails. Once they were all cleared out I moved on the trying to fix the visual voicemail issue which turns out is really easy to resolve by following the below steps.

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Technology Errors

Snort Configure Error: ERROR! dnet header not found – CentOS Linux

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 of the configure error, and the yum command to install libdnet-devel to move past this error when installing snort.

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