There seems to be a lot of confusion with this, so I'm going to make this quick any easy. IPtables is a stateful firewall tht is both powerful and efficent. That being said, let's look at how to restrict a port or service to a specific IP or range of I… more »

Limiting Web Directories by IP Address more »

Linux: delete files by date more »

LINUX: CentOS Anarchy, Lance Davis Missing more »

I've had the unfortunate job of migrating some very old Linux servers to new hardware and OSes. This can be fairly straight forward or very complicated. Most of the time it's somewhere in the middle. If your server runs out of the box with little cust… more »

I wanted to outline the seemingly vague differences between these two. SaaS isn't really a new term. Software a as service has been "mainstream" since I'd say around 2005. Salesforce.com is the popular example of this, and some even suggest that faceb… more »

If you run an ISP or large network, it is best practice to seperate your caching and authoritative servers. Caching servers should provide resolution for all domain lookups from servers/computers on your network. Authoritative servers hold records doma… more »

Let me start by saying these things ARE NOT CHEAP. For the retail price of these arrays, you can by an entry-level luxury car. 88| No I'm not kidding! As I have said before it takes a lot to impress me, and these things blow my mind. The Equall… more »

Most newer servers now come with a TCP offload engine (TOE) or at least offer it as an option. The M600 dell blades have an RJ11 connector on the motherboard that allows you to add this nifty extra. What is a TOE? A TCP offload engine is a piece of ha… more »

Monitoring is a huge part of any network administrators jobs. I've been consulting at various levels over the last 5 years and was surprised to see how many larger companies/IT shops were not effectively monitoring their equipment. A google searc… more »