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	<title>Network Jack</title>
	<link>http://www.networkjack.info/blog</link>
	<description>A Jack of All Nets' experience in the world of networked systems.</description>
	<lastBuildDate>Sat, 19 Dec 2009 22:41:15 +0000</lastBuildDate>
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	<item>
		<title>Optimizing a NetScreen 5GT as a Transparent Firewall</title>
		<description><![CDATA[We have some Windows-based servers that we colocate for some clients.
We&#8217;ve always insisted that those devices sit behind some sort of protection and for a long time, we&#8217;ve used a Cisco 2621 as  a screening router for a smaller subnet of our main address space. Any traffic that wanted to reach the protected IPs was [...]]]></description>
		<link>http://www.networkjack.info/blog/2009/02/25/optimizing-a-netscreen-5gt-as-a-transparent-firewall/</link>
			</item>
	<item>
		<title>noatime for Mac OS X Server boot disk</title>
		<description><![CDATA[The new G4 MacMini with the SSD is running beautifully. However, there is one little detail I&#8217;d like to take care of to help prolong the life of the SSD: disable the atime updating in the file system.
When we build out Linux servers, one of the configuration changes we always make is to add a [...]]]></description>
		<link>http://www.networkjack.info/blog/2009/01/08/noatime-for-mac-os-x-server-boot-disk/</link>
			</item>
	<item>
		<title>Solving the MySQL on Windows Open File limit &#8211; VMWare Linux</title>
		<description><![CDATA[This is a continuation of the saga of helping a customer of ours with their MySQL on Windows issues.
The basic premise is that MySQL 5 running under Windows has problems with large numbers of connections/open files.
We initially presented our client with 2 choices for solving their problem:

Setup MySQL on a different server running Linux
Move their [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/12/20/solving-the-mysql-on-windows-open-file-limit-vmware-linux/</link>
			</item>
	<item>
		<title>Mac Mini VPN Server with internal SSD</title>
		<description><![CDATA[In our continuing adventures of putting the highly versatile Apple MacMini to work in all sorts of applications:
A customer of ours has a specialized application that is extremely low bandwidth, but needs to be able to be accessed through a VPN connection to a protected network resource. All the usual suspects for providing this kind [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/12/20/macmini-vpn-server-with-internal-ssd/</link>
			</item>
	<item>
		<title>Migrating Maildir Mailstore between servers</title>
		<description><![CDATA[There are times when managing ECMSquared installs where a customer will want to migrate to a new piece of  hardware.
One the biggest chores is migrating all of the stored mailbox data. When we migrate a customer from EIMS (Eudora Internet Mail Server) or another product to ECM, the migration must go through a IMAP [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/12/19/migrating-maildir-mailstore-between-servers/</link>
			</item>
	<item>
		<title>Load Average versus CPU Utilization explained</title>
		<description><![CDATA[We have customers that we provide support for both unix and windows based systems. We like put metrics for these systems into our cacti monitoring system, especially performance based values. Here is an explanation I provided to a customer as we recently deployed a Linux based system for their MySQL database alongside their ASP.NET based [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/12/19/load-average-versus-cpu-utilization-explained/</link>
			</item>
	<item>
		<title>Entropy PHP 5 install on 64-bit Xserve</title>
		<description><![CDATA[This is from an exchange on the OS X Server mailing list.
The OP was trying to get mcrypt compiled into his PHP5 install on a 64-bit machine running 10.5.4
On Jul 24, 2008, at 4:53 PM, Someone wrote:
&#62; I&#8217;m trying to compile my own PHP (which I&#8217;ve done plenty of times
&#62; in the past on other [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/12/01/entropy-php-5-install-on-64-bit-xserve/</link>
			</item>
	<item>
		<title>Quick Setup of Shared Calendars with iCal Server</title>
		<description><![CDATA[We had the occasion to setup shared calendaring for our office. Here is a quick to-do list:
Prerequisites:

Server must be a full Open Directory system (not standalone)

Basic Steps:

Setup DNS name for calendar: ical.networkjack.info
Setup iCal Server on OS X Server, including setting up vhost for calendar
Turn on Calendaring (in Advanced tab in Workgroup Manager) for all users [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/09/25/quick-setup-of-shared-calendars-with-ical-server/</link>
			</item>
	<item>
		<title>A Hi-Tech Method of Increasing Air Flow in a PowerMac G4</title>
		<description><![CDATA[We have some devices in our server room in our office that due to the AC not running full blast on nights and Sundays, can get a little warm, even with spot cooling. To ensure better air flow, I&#8217;ve added a hi-tech piece of equipment to a PowerMac G4.
 &#160; 
I normally would have added [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/08/04/a-hi-tech-method-of-increasing-air-flow-in-a-powermac-g4/</link>
			</item>
	<item>
		<title>Root Server Hints file out of date in Mac OS X Server</title>
		<description><![CDATA[With all the recent attention on the DNS exploit and the delay in response by Apple for providing a response, I thought I would undertake a deeper review some of our dns systems. We were already protected from the exploit as we do not provide recursive service with any of our unpatched dns servers.
Turns out [...]]]></description>
		<link>http://www.networkjack.info/blog/2008/07/29/root-server-hints-file-out-of-date-in-mac-os-x-server/</link>
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