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:

Windows Local vs Domain SID Cloning Issues

August 24th, 2009 No comments

When you install Windows a security identifier (SID) is assigned to the machine. This SID is used for local authentication purposes and is stored in the registry and used to assign ACLs to folders and files on the NTFS file system.

In a workgroup setting each computer needs to have its own unique SID. This becomes less important when joining the computer to a domain. When joined a secondary SID is assigned which is derived from the domain SID with a relative ID append. Read more…

Categories: VMware, Windows Tags:

Installing Dell OpenManage on ESXi 4

July 15th, 2009 1 comment

One of the advantages ESX had over ESXi was the ability to install Dell’s OpenManage Server Administrator software in the service console. While reading the VMware ESXi Chronicles blog I came across the following, which made wonder how I was going to manage an ESXi host.

“In the future, ESXi’s superior architecture will be the exclusive focus of VMware’s development efforts.”
Read more…

Categories: 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: ,