The Little Hacker's Room

Yesterday, I configured a whole IPv6 network, complete with a multi-subnet tunneled architecture.

As far as I can tell, the new network works reliably with little latency penalities. I was surprised at how easy the setup was, considering my limited IPv6 routing knowledge.

If you are hesitating to upgrade to IPv6, here is a good reason: soon there will be a bunch of high-quality porn available only on IPv6. You may want to substitute another reason when you talk to your boss about it though.

IPv6-ly yours, Jonathan

A few days ago, I got my SixXS account reactivated(an email bounced back in 2006, never bothered to get my account re-enabled). I now have a tunnel and a full /48 subnet set up.

This gives me exactly 1,208,925,819,614,629,174,706,176 addresses to play around with. I hope it is enough :P. For comparision, an "ideal" IPv4 network would have 4,294,967,296 addressable hosts.

x2a.org is thus IPv6 enabled. Comments welcome as to IPv6 reachability and performance.

Cheers, Jonathan.

(define cols 78)
(define rows 39)
(define iter 36)

(define (density n)
  (cond ((= n iter) #\ )
        ((and (>= n 0) (<= n 9)) (integer->char (+ n 48)))
        ((and (>= n 10) (<= n 36)) (integer->char (+ n 35 -10)))
        (else #\.)))

(define (mandelbrot left right bottom top)
  (do ((i 0 (1+ i))) ((>= i rows))
    (do ((j 0 (1+ j))) ((>= j cols))
      (let ((x (+ (* (/ j cols) (- right left)) left))
            (y (+ (* (/ i rows) (- top bottom)) bottom)))
        (write-char (density (let lp ((c (make-rectangular x y))
 

Since I don't want to pay for a ssl certificate, I have signed my server's certificate fingerprints using GnuPG. I have also compiled a small list of RSA key fingerprints to hosts I connect to often (useful when connecting from a doubtful network).

So, here it is, the poor man's SSL certificate.

Today, I have received my OpenPGP smartcard (serial #00000E26). I have also generated new keys on the card and I have updated my public key.

I am therefore ready to use the card to receive OpenPGP encrypted email using the card's subkeys. The card can also be used to login via ssh, with no special configuration on the server. The card is a nifty gadget, but probably overkill for a good number of setups.

Just thought I would share this as it is somewhat non-trivial.

#!/bin/sh
exec em --eval "(setq-default buffer-file-coding-system 'iso-8859-1)" "$@"


Much to my dismay, Zap2it labs has decided to discontinue the DataDirect service. As it stands, they will not even offer a paying service. Be sure to participate in the poll and make your voice heard.

Finally unfscked the network setup at Alex's place.

From the Dell website:

Basic Windows Vista Experience - No Aero: Great for...Booting the Operating System, without running applications or games

It just goes to show how Microsoft is creating hype with their multi-million marketing campaign.

The distribuTorr project is coming along quite nicely, within a few months, there should be a code release and my hope is that some volunteers will try it out.