I’m hoping to visit the various LUGs during our trip to New Zealand, and have noticed that a LUG sometimes has trouble in securing a speaker for a particular month. This lead me to thinking about the topics on which I could potentially speak. I’m hardly an expert, but I have enough experience in the following fields to give an interesting presentation:
- Creating a “super-router” with OpenWRT : How to take a regular Linksys router, flash the firmware with open source software, and end up with a far more powerful product, capable of enterprise WPA2->Radius authentication, WDS, VPN, etc.
- Penetration testing on a wireless network: How to break the encryption on WEP and WPA, via brute force or packet injection. How insecure is your network?
- How to secure your network against WEP / WPA intrusion by using Radius authentication, on your “super-router”. (above)
- How to setup a simple Asterisk PBX, using Trixbox.
- Setting up your PVR using MythTV.
- Run your own blog, using open source software.
- Setting up a Squid Proxy Server with Active Directory authentication to generate internet usage reports by user.
I could go on and on, but these were my initial thoughts, and probably the ones I’d have the most fun presenting 
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