Archive for the ‘Linux’ Category

Asterisk 1.6, FreePBX and Exchange UM

February 28th, 2010 4 comments

Setting up Asterisk 1.6.1 and FreePBX 2.5 or 2.6 to work with Exchange 2007 UM is easier than Asterisk 1.4 thanks to Asterisk 1.6 including support for SIP over TCP. However only Asterisk and lower work without modification. Read more…

Asterisk and FreePBX Caller Initiated Blind Transfers

February 28th, 2010 No comments

If you place a call and perform a blind transfer Asterisk will continue dialplan execution with a result of ANSWER. This causes an issue with FreePBX as it thinks dialing on the trunk failed. The transfer will go through, but you receive the all circuits are busy message. Read more…

Categories: Asterisk, Linux, VOIP Tags: , ,

Configure VMware Time Sync from the Console

October 14th, 2009 No comments

VMware Tools provides the VMware Toolbox application to configure the time sync option for the guest operating system. This works great with Windows guests or Linux guests using the X11 GUI. However all my Linux guests run without the X11 GUI. If you know the current setting of the time synchronization option you can use one of the following commands. Read more…

Categories: Linux, VMware Tags:

ESX 4 CentOS Guest Showing Udev Unknown Key

July 11th, 2009 1 comment

After installing VMware Tools on a CentOS 5.3 guest hosted on ESX 4 I was receiving the following udev warnings during startup.
Read more…

Categories: Linux, VMware Tags: , , ,

Installing SquidGuard 1.4 on CentOS 5

February 1st, 2009 No comments

SquidGuard is an excellent content filter that integrates with the Squid proxy software. Unfortunately CentOS only includes an RPM for Squid, and Fedora and Diag Wieers only had version 1.2 available. Read more…

Categories: Linux, Squid Tags: ,

VMware Web Service Not Available

September 26th, 2008 No comments

After upgrading to VMware Server 2, I have sporadically received an error message stating “vmware ServiceNotAvailableException: Web service not available”. There isn’t much information on the cause of this error, but I found disabling IPv6 resolved it for me. Read more…

Categories: Linux, VMware Tags:

Hot Adding a SCSI Device

July 11th, 2008 No comments

When hot adding a SCSI device, such as a hard drive, you might have noticed that it doesn’t show in /dev. You can either reboot, which defeats the purpose of hot adding the device, or notify Linux to rescan the SCSI bus. Read more…

Categories: Firewalls, Linux, RAID, Windows Tags: