This past Tuesday I hosted a DNS training seminar for all the employees at Sago. It went over great! The curriculum involved:
The difference between Caching and Authoritative DNS All the different types of DNS Records How to use dig and how to interpret it How to troubleshoot dns problems Secret DNS Tricks! I recorded the AUDIO (sorry the audio sucks) and the BASH history for those poor souls who want to listen to me drone on for an hour about dns….
So I’ve found a better way to do what I did in the previous post. Instead of running a separate script to parse the arp alert logs, I have arp alert itself send the alerts! The key is this line in the arpalert.conf
action on detect = "/etc/scripts/arp-alert" Its so simple, it just runs that script sending the information about the alert as certain arguments. With this I have more control over the formatting of arpalert messages:
So I was looking around, and I wanted some sort of tool to allow me to be more aware about what was happening in the lower “bowels” of the network that I’m on with my laptop. So what is it that I want…
What I really want is some sort of mac-address based buddy list. One that would show my a list of the mac addresses talking on my network, and allow me to alias them.
Recently a DNS expert found a flaw in the way that DNS servers talk to other DNS servers to get records that allows interested parties (hackers) to insert their own records. If you need a primer: the Wikipedia link.
Well… a DNS flaw is no fun without a tool to use it. So this guy “HD Moore” wrote a program (script) that takes advantage of this and makes it relatively easy for someone to use something called Metasploit to tinker with it.
So lots of people use computers, and lots of people have harddrives.
At my work I deal with lots and lots of computers and lots and lots of drives. So during a week I see plenty of failing drives, just because of the statistics.
So now-a-days I run a “smart test” on the drive to see how it is. Unfortunately most drive testers and smart tests are crap. So I made my own and I want to share it with you….
We have finally built enough pieces of the clock together to get some digits! It basically comes down to a white wooden box, a piece of cardboard with the LEDs wired, running to a RJ45 jack. Then a stryofoam cutout painted black, with a white piece of paper and plexyglass on top for a face.
Here is the template with wired LEDS: A multitude of completed digits (still missing the blank faceplate).
This is a video that I made for some fourth graders in an attempt to explain what Wikipedia is, how it works, and why it is neat. We made a new article together, and they all went home with a piece of fiber optic to remind them of the event. This is the video I showed them for historical purposes:
Get the Flash Player to see this player.
Now hear me out, I used to be a hater. It seems that the more people blog, the more the internet is loaded up with wasted bandwidth and ad space. The truth is that blogging has a very small marginal cost, and usually blogging occupies time that would not otherwise be spent doing “productive” things.
But! What if all of humanity blogged, and then we could aggregate all blogs on the internet.
Here is the intro to the clock project:
We start with a template made at a sign shop, and the cover the edges with aluminum tape to protect them from the heat from the hot wire.
I’ve pushed out holes with a strait wire and a blow torch to give my entry points for my hot wires. Its going to be a plunge and cut job.
The laserpointer helps guide the hot wire because it inevitably bends and makes crooked cuts.
Here are some of the messages that are passed back and forth between my roommate and I…
Sometimes we make up silly things… late at night…
Sometimes we borrow each others things…
And we get the better of each other with our antics…
Our true feelings for each other?
To do list…
Sometimes we DON’T let each other borrow things…