Category IP Networking

Using pxeboot to install FreeBSD 5.3 on a laptop without bootable CDROM drive

This month I had to install FreeBSD 5.3 on a laptop that lacked a bootable CDROM (a Toshiba Portege R100). Rather than launch the installation from floppies, I decided to explore the use of pxeboot (supported by the R100’s BIOS) to enable the laptop to boot the FreeBSD 5.3 Installation CDROM over my local LAN.

HotSync’ing and Web Surfing a Palm Tungsten C over USB with a FreeBSD 4.8 Host

In December 2003 I purchased a lovely new Palm Tungsten C, an 802.11b-enabled PDA with tiny little keyboard and colour touch screen. When it is in the cradle the USB port can be used to establish a PPP-over-USB session to a FreeBSD host, over which web-surfing and hotsync’ing is possible.

A home NAT/Gateway using FreeBSD

A low powered PC (in this case a 450MHz PIII, Dell XPS T450) running FreeBSD4.6 is the NAT/Gateway between my home LAN and my broadband service provider (in 2002 this was cable internet from Telstra Broadband). FreeBSD makes it easy to turn almost any old PC into a decent NAT/Gateway. Machines with less than 32MB […]

Latency Sensitivity and NAT Usage in Online Games

I presented the following slides for a talk at Marconi Research in the UK on November 27th 2001. Click on the first one for a WordPress slide show.

Sensitivity of Quake3 Players To Network Latency

I presented the following slides at a Poster session of the SIGCOMM Internet Measurement Workshop, San Francisco, November 1, 2001. Click on the first one for a WordPress slide show.

Impact of traffic load on Ping times over Cable Modem links

In 2001 I had cable internet to my house in Redwood City, California. I was also playing online Quake III Arena and Half Life over this link. Out of curiosity I decided to check how the latency between my house and my favorite game server changed as a function of IP traffic load through the […]

So optical networks will solve quality of service?

How many times have people told you that QoS (quality of service) in the Internet will magically be solved once we get optical fibre and loads of bandwidth every where? An attractive assertion, to be sure, but one that rather misunderstands why IP QoS fails to materialize in today’s Intenet.

Buying just bandwidth from your service provider is short-sighted

Ever notice how public train services differentiate themselves from cars and buses by pointing to the enormous power of their diesel-electric engines? Or how the airlines encourage you to compare the enormous thrust of their jet engines with those of their competitors? Not really? Me neither.

Using an Apple Airport Basetation, Windows machines and FreeBSD boxes to build an 802.11b wireless LAN

There’s no rocket science here. I just wanted to see how easy it was to build a secure home LAN using some of the commonly available 11Mbit/sec wireless gear now coming onto the market. It just so happened that I had WaveLAN/Orinoco and Apple Airport products. Hope my experience is of interest to others 🙂

A book: Quality of Service in IP Networks

I wanted to read a book that would put IP QoS into some perspective. The book didn’t exist in quite the form I wanted, so I wrote it….