News archive July 2002 - Koos van den Hout

Archive by year: 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 | 2007 | 2008 | 2009 | 2010 | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021

2002-07-31 (#) 19 years ago
I bought a CyberDrive scsi cd-rom drive last November (HCC) and kept having termination problems. But no manual. So I got tired and bought a different (faster) drive and searched for technical support pages for the CyberDrive to return it for repairs. Where I found a Technical issues page explaining that 'jumper open' is terminated and 'jumper closed' is not terminated. That was the other way around from what I expected after all other scsi devices with jumpers.

Tags: , ,
2002-07-30 (#) 19 years ago
My first IOS upgrade.. interesting are the parts where an error in the settings will leave the router very non-booting.

Tags: , ,
2002-07-26 Deep linking and bandwidth theft 19 years ago
Some sites will go to court because other sites link to pages on their site
so you can get to interesting bits of the site without clicking through
loads of index pages with al their banner ads.
Especially newspaper sites seem to be infected with this disease.

But with Apache Webserver it is perfectly possible to set the rules for
linking to articles on a site without having to look EXTREMELY STUPID
because you need lawyers to avoid links to your site in stead of someone
who configures your webserver. Last time I checked a technician who can
configure special access rules in Apache was still cheaper then a lawyer.

But hey, if you want to become the ridicule of the Internet community,
go ahead. They will have a laugh at your expense and post on places like
Slashdot that you don't "get it".

If you want some opinions on the subject of deep linking, search Google.
Jakob Nielsen has written a good article about deep linking
being good linking
. And Jakob Nielsen isn't just another name when it
comes to web usability and user interfaces.

On my other site, The Virtual Bookcase I promote deep linking.
Please link to any book or author on the site, the URLs are made to stay the

This is all about linking to interesting content on your site. There is
a different bit of 'deep linking' which is more commonly known as
'bandwidth theft'.

The first time I had to deal with this was not set up as 'bandwidth
theft', but someone who linked to all kinds of images on my site
from some discussion board to 'get back at me' (I reported a portscan
from an IP unknown to me to the ISP where they decided to kill the

This showed in my web-logs as an interesting new set of external
referrers. So I visited the referring pages and found all kinds of
interesting name-calling.

So.. I dug around the Apache website and found the
Apache mod_rewrite manual which has special 'cookbook'
entries for cases like this. Using the Apache mod_rewrite module
it's possible to do almost anything based on the URL and the environment
variables. The HTTP_REFERRER is one of those.

So, copying and adapting a cookbook entry from that guide, I got to a
.htaccess file with:

RewriteEngine on

RewriteBase /~koos

RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^*$ [NC]
RewriteCond %{HTTP_REFERER} !^*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://images\.google\..*/.*$ [NC]
RewriteRule .*\.(jpg|gif|au|wav|mp3)$ - [F]

And that stopped most of the stupidy then. The images will just give a 403
when directly linked or a broken image when linked from a page.

A few months later I grepped my logs for 403 errors and found that other
places also linked images and never bothered to check the results because
the pages were filled with linked images. So a slight update was needed to
give a bigger hint..

RewriteEngine on

RewriteBase /~koos

RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^*$ [NC]
RewriteCond %{HTTP_REFERER} !^*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://images\.google\..*/.*$ [NC]
RewriteRule .*\.(jpg|gif)$ stealing.gif [T=image/gif,L]

'stealing.gif' is an animated gif with the text 'stealing bandwith is lame'.

Looking in the logs, it seems the message is getting through. A bit.

Tags: , ,
2002-07-24 (#) 19 years ago
Debian has released Debian 3.0 (woody) as stable version. Now make all the jokes about 'giving a woody'.

Tags: , ,
2002-07-17 Huren. Dat kan natuurlijk ook. 19 years ago
De volgende slogans zijn afgekeurd voor deze campagne:

"Je stond pas 5 jaar op de wachtlijst ? Ja, dan loop je zo'n huis mis."

"Wat leuk dat u de keuken gerenoveerd heeft.. nu gaat de huur omhoog."

"Nee, die parketvloer moet er uit.. in originele staat opleveren."

Tags: ,
2002-07-17 (#) 19 years ago
Watch The Virtual Bookcase for new additions in information and some redesign of the pages.

Tags: , ,

IPv6 check

Running test...
, reachable as PGP encrypted e-mail preferred. PGP key 5BA9 368B E6F3 34E4 local copy PGP key 5BA9 368B E6F3 34E4 via keyservers

Meningen zijn die van mezelf, wat ik schrijf is beschermd door auteursrecht. Sommige publicaties bevatten een expliciete vermelding dat ze ongevraagd gedeeld mogen worden.
My opinions are my own, what I write is protected by copyrights. Some publications contain an explicit license statement which allows sharing without asking permission.
Other webprojects: Camp Wireless, wireless Internet access at campsites, The Virtual Bookcase, book reviews
This page generated by $Id: morenews.cgi,v 1.50 2020/12/31 15:36:31 koos Exp $ in 0.016829 seconds.