Free to take over software for linux

RIR to DNS converter is a tool to convert Regional Internet Registry data to a DNS country lookup zone. You can use it to build your own DNS zone for looking up country codes from IP addresses.

It uses data directly from RIPE, ARIN, APNIC, LACNIC, and AFRINIC. The data can be updated on a schedule of your choosing.

The input data comes from:

ftp://ftp.afrinic.net/pub/stats/afrinic/delegated-afrinic-latest
ftp://ftp.apnic.net/pub/stats/apnic/delegated-apnic-latest
ftp://ftp.arin.net/pub/stats/arin/delegated-arin-latest
ftp://ftp.ripe.net/pub/stats/ripencc/delegated-ripencc-latest
ftp://ftp.lacnic.net/pub/stats/lacnic/delegated-lacnic-latest

The input data format is described in:

http://www.apnic.net/db/rir-stats-format.html

The output is a BIND 9 zone file that can be used to look up country codes
in a similar fashion to in-addr.arpa. For example, to find out what country
203.30.47.58 is:

host 58.47.30.203.rir.example.com
58.47.30.203.rir.example.com has address 127.0.65.86

where 65 and 85 are ASCII for A and U, which means 203.30.47.58 is
in Australia (AU).

HOW TO USE IT

Just feed it the above delegated- -latest files into stdin and it will
spit out the zone file to stdout. The zone file will only have the IP addresses,
so you could $INCLUDE it into a zone file that contains NS records, SOA, $ORIGIN,
etc.

WHY USE IT

You dont need the resolution of MaxMinds GeoIP database, but you do want
something that is free and you want it kept up to date on a schedule that
you decide.

You could use this to block or tag email based on countries, block or redirect
visitors to your website based on end-user country, and so on. Be very
careful about blocking mail this way, though, as you may block legitimate
email. Instead of blocking outright, use it in a SpamAssassin rule to add
something to the spam level, based on where the email comes from.

HOW IT WORKS

The RIR files contain ranges of IP addresses, and indicate what CC each range is allocated to. At the simplest level, rir2dns just sorts the ranges then iterates
through the IPs in each range and generates a reverse-dns-style A record that
represents the country code.

HOW IT WORKS - IN DETAIL

Rather than iterate through each IP address, the program tries to skip through
entire classes at a time (256 IPs, 65536 IPs, etc). Rather than iterate
through each IP, the loop iterates through classes or IP ranges (whichever are
smaller at the loop control), using control-breaks to accummulate neighbouring
ranges where possible so that entire classes that are in the same country dont
generate huge numbers of records.

Firstly, IPs are considered to be 4-digit numbers, but in base-256. In other
words, each octet is dealt with as if it were a single base-256 digit. This
turns out to be convenient because optimisations of large chunks of IP space can be done by looking for places where least-significant base-256 digits are zero.

Next, IP ranges are broken down into the following sub-ranges:

Optional individual IP addresses (ie: 4 octets)
Optional A-class ranges (ie: 3 octets)
Optional B-class ranges (ie: 2 octets)
Optional C-class ranges (ie: 1 octet)
Optional B-class ranges (ie: 2 octets)
Optional A-class ranges (ie: 3 octets)
Optional individual IP addresses (ie: 4 octets)

Considering that there is a pattern here, Im sure theres an elegant way to
handle breaking this down into two loops (one reducing the octets and one
increasing the octets), but I cant be bothered, so Ill break it down into
seven loops. Kind of hard-coded, but at least its simple.

For ease of processing, the IP addresses are actually converted to 32-bit numbers, then back again. This simplifies mathematics and looping through ranges.

Thats pretty much it, really...

Note that currently there are about 80,000 RIR records between all five
registries. This takes about 35 seconds on a 2.4GHz P4 to process, and
generates a 26MB file with around 3/4 million lines (RRs). This causes BIND
to use about 100MB or so of memory, and on a slow machine will probably cause it to take too long to reply, while it searches the zone. That size zone can
take a minute or two to load, which is quite a while.

Basic algorithm:

Read & process RIR data:

Read RIR ranges
Sort RIR ranges by start IP address
Glue together contiguous ranges of the same country

For each range

Generate the IPs at the start of the range

Generate the A-classes at the start of the range

Generate the B-classes at the start of the range

Generate the C-classes in the middle of the range

Generate the B-classes at the end of the range

Generate the A-classes at the end of the range

Generate the IPs at the end of the range

MaeConverter can replace a Merak email server and allow you to switch to a more powerful, standard email server solution such as postfix, qmail, or any other type of SMTP server that is able to take advantage of SQL databases.

MaeConverter requires Trolltechs Qt4 and maildirmake.

Serial Over IP is a tool for the transport of serial interfaces over UDP/IP. It is very usefull for connecting distant equipment that run via a serial interfaces to a local computer.


One linux will be server and one will be client. On the server you can start the program typing the following command:

bash# serialoverip -d /dev/ttyS0 9600-8n1 -s 127.0.0.1 3000

... and on the client:

bash# serialoverip -c 127.0.0.1 3000 -d /dev/ttyS1 9600-8n1

In both commands the IP address is the server IP. Note that you have to start the server first, and it will be efectively be running only after the first packet received from the client.

Xblock reporter is a set of PHP and shell scripts to insert an exported report from an 8e6 Xstop R3000 appliance into a database, and then output that in a searchable web based format.

XBlock Reporter is a shell/PHP/MySQL front end to take the logs from an 8E6 Xstop appliance and store the data for searching/reporting.

Tagore project is a personal desktop wiki for GNOME.

Tagore lets you take notes using the textile syntax and display them with the embeded browser. You can add tags to your notes for easy organizing them and you can later export them to html.

ATA over Ethernet Tools are intended for use in conjunction with an ATA over Ethernet (AoE) driver for a Linux 2.6 kernel.

They perform simple tasks like listing available devices, triggering device discovery, and restricting the network interfaces on which AoE is performed.

Whats New in This Release:

This release includes a workaround for a bug in the dash shell where dash does not support POSIX math expressions like ...

n=1
echo $((n+1))

Head Over Heels is a spanky new remake of the classic Jon Ritman & Bernie Drummand isometric adventure.

Head Over Heels was released, um, a while ago. Around about 1987 if I recall correctly and it was immediately praised in the press as being quite the bestest thing ever. Not only was it a huge game for its time, it also had great graphics and was very addictive - if somewhat punishing in its difficulty level.

The variety in the locations was amazing and the challenges brilliantly designed. Quite rightly it was awarded with pretty much every accolade that could be bestowed upon it by the various magazines. Even today it still stands as a brilliantly designed title and has never really been bettered in the isometric adventure genre.

This version is a pretty darn faithful remake of the Speccy original except with a few spanking extra bits grafted on like a save system and subliminal flashes of erotic art (if I have my way!). I should perhaps tell you a bit about the team whos making the game. Im the one responsible for the graphics (apart from the lovely logo which you see adorning this site) and Im Graham Goring.

The programming is by the very talented Tomaz Kac (who only wrote this game because of a hastily scrawled diagram posted on the Retrospec mailing list about how you cant properly sort isometric games without complex masking), the excellent music is by Dorian Black (who I understand has a picture of an old man in his loft - ha ha ha!) and this website and the games logo is by Pierre Jovanovic.

Other contributors are James Curry, Kakarot, Milos Babovic, Metka Jostl and Sir Dave-O whose beta testing has been invaluable in both ironing out the programming bugs and also refining the layout of some of the rooms due to the handling being ever so slightly different to the Spectrum version.

On a personal note Ive also been encouraged by all the lovely people at the pixelation forum (pixelation.swoo.net) and of course the other members of Retrospec who have now grudgingly accepted that I can actually draw fairly good graphics.

snake3d is a variant of the snake game (or worm game, depends on when you where
born).

You are a snake in a 3d cube trying to eat as many icosahedrons as possible, which makes your tail longer. To make things worse, there are other snakes in the cube.

When the game starts, all snakes are controled by the computer. When you like to take over, simply press a movement key and youll gain control over the green snake.

The keys are:

4 2 6 8 9 3: Moves left, down, right, up, forward, and backward according to the boards "north". That is, if you rotate the board, the 4 will make the snake move to the same wall even if it is now in the back. For help, there is a small compass on the lower left corner of the screen.

j , l i: Moves left, down, right, and up, according to the snakes point of view. For those controls you can use the "first person view" on the left of the screen. In the full board view, notice the eyes of the snake which will tell you which direction is up.

m .: Rotates the snake left and right around itself (I think this is called yaw).

a x d w: Rotates the board left, down, right, and up.

z c: Rotates the board in the z axis (yaw again?)

= -: Zooms in and out

G: Change grid level in the first person view

g: Change grid level in the full board view

n: Enters and exits auto pilot mode (notice that this is not the same as the other snakes or the beginning auto pilot mode. On this mode the snake will simply avoid obstacles.

r: Resets the speed and the board (rotation and zoom).

R: Resets the snakes (after you die).

b: change background color

< >: speed up and down

e: show walls

f: full screen mode (very buggy)

t: lighting on and off

p: pause

q: quit