http://www.wand.net.nz/~smr26/wordpress Hardly blogging at all since 2005 Wed, 27 Aug 2008 11:35:40 +0000 http://backend.userland.com/rss092 en The goal of this article is to document the process of setting up a basic KVM instance the hard way. That is, without using GUI tools, magic scripts, VNC'd installers, etc. Pretty much all of the KVM guides I've seen assume you're sitting at the physical box you're deploying the VMs ... http://www.wand.net.nz/~smr26/wordpress/2008/08/28/kvm-the-hard-way/ A few days ago I received my copy of "Ghosts" in the mail. I paid $10USD about a month ago and got the FLACs that day and have been listening to them ever since. Having the physical CDs now is a nice bonus - in fact, I haven't even ... http://www.wand.net.nz/~smr26/wordpress/2008/05/09/a-great-time-to-be-a-nine-inch-nails-fan/ Changes since radiotap-0.2: Name changed to libradiotap Now uses the GNU build system, creates both shared and static libraries Removed ieee80211_radiotap.h and folded the appropriate definitions into libradiotap.h Removed the IEEE80211_ prefix from the radiotap field constants radiotap_has_field() is now a static inline function Fixes for big-endian, tested on a ... http://www.wand.net.nz/~smr26/wordpress/2007/11/03/libradiotap-100/ On the weekend Emily and I decided that we needed to do more outdoorsy stuff, so we went and found a nice little walk on Mt. Pirongia, just out of Hamilton. We did the "Mangakara Nature Walk", which is a loop through some native bush and crosses the Mangakara stream. ... http://www.wand.net.nz/~smr26/wordpress/2007/10/29/outdoorsy-stuff/ Leopard now comes with a built-in SSH agent. The really nice thing about it is that it integrates with your user's Keychain. So, the first time you try to unlock your SSH key a dialog will appear asking you for its password along with an option to save that password ... http://www.wand.net.nz/~smr26/wordpress/2007/10/28/mac-os-x-leopard-built-in-ssh-agent/ I installed Leopard last night and as I was browsing my local network I noticed something kinda funny... apparently this is what a Windows PC looks like: http://www.wand.net.nz/~smr26/wordpress/2007/10/27/mac-os-x-leopard-easter-egg/ An updated version of my Radiotap decoder for C is available. It fixes several bugs, cleans up the interface and most importantly now implements correct byte-swapping on big-endian hosts. Get radiotap-0.2.tar.gz. http://www.wand.net.nz/~smr26/wordpress/2007/10/24/updated-radiotap-decoder-for-c/ I'm sure that no-one has noticed that I've been fairly silent on the blogging front for a while. I took a three month break from the Ph.D to do some work for Cambridge Silicon Radio. The experience working on a real-world project was great and the project itself was both ... http://www.wand.net.nz/~smr26/wordpress/2007/08/09/error-timed-out-thinking-up-post-title/ With libtrace 3.0 we included an API for extracting wireless metadata from packets. So for example, you can call trace_get_wireless_signal_strength_dbm() on a libtrace packet and get it's absolute signal strength. This is done by decoding the Radiotap monitoring header if present. This is all fine for physical layer attributes, such ... http://www.wand.net.nz/~smr26/wordpress/2007/04/25/thoughts-on-libtrace-wireless-api-and-radiotap/ After spending most of last week manually validating the packet matcher I've decided that it's at a pretty good state. I've settled (for now at least) on calculating the hamming-distance over 128 bits from various parts of TCP, IPv4 and 802.11MAC headers. Any frames that are transmitted and received within ... http://www.wand.net.nz/~smr26/wordpress/2007/04/25/characterising-errors-in-wireless-links-continued/