bornl33t spreading the l33t to you

If you use a linux router, you probably already use ddclient to handle you dyndns.com, no-ip.com or other services to update your A records. To make this a reality, you can use the same service as dyndns in ddclient and here is the URL to update your IP!

URL as specified by the DynDNS.com folk's developer specifications
https://${username}:${password}@updates.opendns.com/nic/update?hostname=%{hostname}&myip=%{ip}

And finally, your ddclient code!

The following script is useful for populating a switch's MAC address table with out using ARP or IP. This is accomplished with a single Perl module (Net::ARP) and by sending raw ethernet frames. This particular example it is assumed that all interfaces on are on the same L2 network (VLAN or otherwise) and uses the "primary" nic's IP address for the ICMP packet (though you could do it with an IPX packet or anything else). You could also use the gateway IP as well if you wanted it to show up in ARP.

This method doesn't produce any broadcasting or AllForward-L2 traffic to occur because the frame as a source and destination in it. Please take this as a proof of concept, but the below code did work in a production environment.

We are testing out the new murmur server for mumble @ voice.bornl33t.net just use the default port and the same password as the ventrilo server. For those of you with registered users, I don't have a way to migrate you at this time. Though I'm looking into a way to link the drupal users into the mumble user database.

I had to re-enable the global password again because random people started abusing the server. I don't pay for it for random people :) So, message me if you need the password or don't have a user account.

Woot!!! storage on the way! the only problem is I think I got a bum drive :( Right now I am DD'ing them all to hopefully catch the bad sectors (that are not repairable). images here they are a little dark and fuzzy, but I was too excited to wait!

With my ever-growing storage needs at home, I've run into the problem that powering drives with an internal PSU is not only ugly but inefficient and risky. Rather than buy a huge case that has horrid cooling and is very noisy, it would be optimal if I placed these drives outside of their case on their own power. I've done this once before but the 4x SATAII connectors is fugly and difficult to manage. I have finally found a solution however...

Here is the letter I recieved from DarkStar about the ventrilo server. I've already updated DNS to use the new IP as it is online and active. So if you are using the DNS it shouldn't be a problem for you.

This is the email I received from DarkStar about Ventrilo. Please read and upgrade to Ventrilo 3.0!! I will make a copy available on bornl33t later.

Mirrored sed one-liners from http://www.student.northpark.edu/pemente/sed/sed1line.txt

This was too useful to let it fall off the internet should link expire! Great read/reference

Finally, I'm able to get fully gigabit speeds from my linux server to my workstation. I couldn't tell who was the bottle neck before so I tuned them both. Originally, no matter what I did I would cap out at 160 to 320mbps at any point using any TCP or UDP. Ping seemed to work so I know it wasn't a bus issue. Come to find out, a few sysctl and registry hacks got me to 871mbps! No jumbo frames either, as those don't really fix the problem.

In linux I have the following in my sysctl. Keep in mind that this is a Dual Xeon 2.0Ghz with 1GB ram and a intel gigabit on PCI-X.

sysctl.conf