Don't-Miss Networking Stories

Installing Nagios on Mac OS X 10.5 Server

John C. Welch updates his instructions for installing the open-source Nagios on to the latest version of OS X Server, an operation that will turn a Mac into a network monitoring station that can notify you of hardware and software problems.

Adding 802.11n to older iMac

Have an 802.11n network that's slowed down by an older Mac's "g" wireless card? Here's a solution.

Windows and AirPort's Equivalent Network Password

Windows wants your AirPort base station's key code. Here's how to find it.

Close the ports

While OS X has long included basic firewall software, Leopard introduced some significant changes to it, leaving many Leopard users confused as to how to keep their Macs secure. But though the firewall interface in Mac OS X 10.5 is indeed quite different from that in earlier versions of the OS, it’s still relatively easy to use.

The portable hotspot

If you travel with colleagues for business trips, or if your multiple-Mac family brings its laptops on vacation, getting Internet access for everyone can be an exercise in configuration frustration. There is an alternative: a cellular router.

Improving AirPort's range

While Wi-Fi signals are supposed to reach 150 feet in any direction from a gateway, that optimistic number is rarely reached indoors.

Troubleshooting AirPort Interference

Imagine a large room full of loud people. Voices bounce off the walls, making it impossible to follow any one conversation. That’s something like what happens to wireless networks: there are all sorts of other electronic devices out there using the same wireless spectrum, and your AirPort hardware can have a hard time distinguishing one transmitter from another.

Laptop gems

Here are some favorite pieces of low-cost software specifically designed for—or just especially handy for—use on a laptop.

Redirect domain names

Registering more than one domain name to point to a single Web site isn’t unusual. Nor is it strange to host a Web page at an ISP or community site and want a subdomain to bring people directly to what’s often a long and hard-to-remember URL. Redirection is the answer.

New AirPort, old network

Apple’s new AirPort Extreme Base Station, based on the still-in-progress IEEE 802.11n standard, can wirelessly transmit more than 90 megabits per second (Mbps) of data.

Eight ways to go green

An energy-efficient office is good for the planet—and your wallet

How do spam busters work?

Built-in and add-on spam busters—programs designed to work with your e-mail program to eliminate spam—go about determining what is and isn’t spam in a variety of ways.

Three for the road

If you travel with any regularity, chances are you have your favorite tricks for making each trip go as smoothly as possible. Here are a few more techniques to add to your repertoire, from three of our mobile Mac experts.