Jimmy's weblog

I’ve been pretty busy this week working on a presentation titled “Firewalls by example” for The University of Melbourne’s SecureCon conference tomorrow.
It’s a ninety minute presentation that will cover the features of Windows XP’s Internet Connection Firewall, Mac OS X’s (client and server) ipfw and Linux’s iptables. I will also be discussing typical traffic patterns [...]

If you’re sick of advertising on the websites, then try Privoxy, available on OS X, Linux and Windows platforms. Privoxy is a free, open source software package which runs as a proxy server on your computer, automatically filtering out advertisements, unwanted cookies and more.
Privoxy is a proxy that is solely focused on privacy protection [...]

OS X.3 has a wide range of options for taking screenshots. I always manage to forget what they are, so I am listing them here for reference.
Screen to file : Shift-APPLE-3
Screen to clipboard : Ctrl-Shift-APPLE-3
Crosshair screen selection to file : Shift-APPLE-4
Crosshair screen selection to clipboard : Ctrl-Shift-APPLE-4
Window to file : Spacebar after Shift-APPLE-4 then [...]

As a Linux and OS X systems administrator, I spent a lot of time working in SSH terminals on various servers. Public key authentication means I don’t need to enter my password to log on to each individual machine.
SSH Agent is a graphical interface for the OpenSSH utilities that are distributed with OS X. [...]

The lab notes from X World are not yet available on the web so I will talk about OS X.3 Panther server rather than the X World labs as I originally planned to.
Panther server is the next generation of Apple’s OS X server and is due to be released before the end of 2003. [...]

Last week I attended Apple’s X World OS X developers course in Sydney. The conference consisted of three major presentations and three hands-on lab sessions.
The first presentation was a summary of Apple’s WWDC conference in San Francisco and included an introduction to Apple’s new 64 bit chip, the Power Mac G5. This was [...]