22 Jul
2006
22 Jul
'06
9:21 a.m.
Hi All
Anyone saw the "10vor10" -report about blocking access to child
pornographic
sites yesterday evening?
I'm really surprised, that bigger ISPs like Cablecom now would support
that.
Interesting is also the statement, that smaller ISPs already confirmed
their
support for this "preventive blocking"...
Article on SWISSTXT:
http://www.swisstxt.ch/SF1/114-00.html
10vor10 Report:
http://www.sf.tv/var/videoplayer.php?videourl=http%3A%2F%2Freal.sri.ch%2
Framgen%2Fsfdrs%2F10vor10%2F2006%2F10vor10_21072006.rm%3Fstart%3D0%3A14%
3A27.159%26amp%3Bend%3D0%3A17%3A33.736
cheers,
michel
22 Jul
22 Jul
9:37 a.m.
Michel Renfer wrote:
Anyone saw the "10vor10" -report about
blocking access to child
pornographic
sites yesterday evening?
I'm really surprised, that bigger ISPs like Cablecom now would support
that.
Interesting is also the statement, that smaller ISPs already confirmed
their
support for this "preventive blocking"...
I think this started here in CH in about 1996 or 1997 - we used
to get lists regularly of sites to block. The lists had at the
time about 20 or 30 sites - looks like it's grown quite a lot
since then. They used to be mostly sites with political speech
that most European governments find offensive.
--
Mickey Coggins Tel: +41-79-210-3762
10:03 a.m.
There were a few approches until now, already with low success or
technical implications (other sites also blocked, etc.)
The discussion now happend on society level. Any bigger ISP will
never offically reject such blocking requests for child pornography
in a tv interview as this can hardly hit their image in the public.
The technical questions of the blocking are completly fadet out. They
didn't really care anyone. Blocking can and will definitivly not work.
Endusers can implement workarrounds in less than a minute. Other
questions
like, who's maintaining the list etc. are not even discussed.
I'm really concerned about the way that this story will/ can go...
cheers,
michel
6:32 p.m.
Michel Renfer schrieb:
There were a few approches until now, already with low
success or
technical implications (other sites also blocked, etc.)
The discussion now happend on society level. Any bigger ISP will
never offically reject such blocking requests for child pornography
in a tv interview as this can hardly hit their image in the public.
The technical questions of the blocking are completly fadet out. They
didn't really care anyone. Blocking can and will definitivly not
work. Endusers can implement workarrounds in less than a minute.
Other questions like, who's maintaining the list etc. are not even
discussed.
I'm really concerned about the way that this story will/ can go...
Full Ack. After this letter arrived, I wrote a blog entry:
http://www.blogg.ch/index.php?/archives/444-Kampagne-Stopp-Kinderpornografi…
Few days later I got a call from the journalist of SF who did the report
in 10vor10. Means: the journalist was perfectly aware of all the
technical and political issues in this case, but he masked out it
completly. IMHO a bad job, 10vor10.
F.
8:53 p.m.
On the Sat, Jul 22, 2006 at 06:32:21PM +0200, Fredy Kuenzler blubbered:
Hoi.
Full Ack. After this letter arrived, I wrote a blog
entry:
http://www.blogg.ch/index.php?/archives/444-Kampagne-Stopp-Kinderpornografi…
Few days later I got a call from the journalist of SF who did the report
in 10vor10. Means: the journalist was perfectly aware of all the
technical and political issues in this case, but he masked out it
completly. IMHO a bad job, 10vor10.
Bad, probably. Maybe they feared it getting out of hand.
Explaining things like DNS, IP addresses and virtual hosts in a
few minutes so that Joe User understands might not be that easy.
On the other hand though, that's the problem with nearly every
computer related topic today.
They could at least have mentioned that it is very easy for a
halfway skilled computer user to circumvent these blocking
attempts of the providers though.
CU, Venty
--
Martin Ebnöther, ventilator@semmelmail http://www.semmel.ch/
Videogamer, Techno Musician, Gourmet, R-Typer, Beer drinker, Lefty
Symlinker, Playstationeer, Chilihead, Honda driver, Paranoia GM
This space for rent. Call 0800-Semmel-Ads
10:15 a.m.
I saw it too.
I was quite surprised as we got this letter too and were asking ourself how to
block such sites technically. I must confess, we did not find any faisible
solution.
=> Blocking the IP-Addresses of the sites.
Affecting many other sites hosted on an affected ISP.
Many ways to dodge those blockings by means of open proxies on other networks
or even using sixxs net via ipv6.
=> Redirecting all traffic to port 80 via a transparent proxy.
Breaks many applications like NTLM Authentication etc.
Easy to dodge by the same technique as mentioned above.
Still the best way is to notify the affected ISP that they host Child-Porn. I
don't think they know about it. If they do, notify their uplinks. I guess
they would get disconnected rather quickly.
-Benoit-
1:52 p.m.
I think the you can only block this pages when they are blocked by arin.net
else. it's now way to block it realy.
In the clip they have written all providers will be written. I know that
some providers hasn't receive this letter.
Greetings
X. Aerni
----- Original Message -----
From: "Benoit Panizzon" <benoit.panizzon(a)imp.ch>
To: <swinog(a)swinog.ch>
Sent: Saturday, July 22, 2006 10:15 AM
Subject: Re: [swinog] Preventive blocking
I saw it too.
I was quite surprised as we got this letter too and were asking ourself
how to
block such sites technically. I must confess, we did not find any faisible
solution.
=> Blocking the IP-Addresses of the sites.
Affecting many other sites hosted on an affected ISP.
Many ways to dodge those blockings by means of open proxies on other
networks
or even using sixxs net via ipv6.
=> Redirecting all traffic to port 80 via a transparent proxy.
Breaks many applications like NTLM Authentication etc.
Easy to dodge by the same technique as mentioned above.
Still the best way is to notify the affected ISP that they host
Child-Porn. I
don't think they know about it. If they do, notify their uplinks. I guess
they would get disconnected rather quickly.
-Benoit-
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6 comments
6 participants
participants (6)
-
Benoit Panizzon -
Fredy Kuenzler -
M. Coggins -
Martin Ebnoether -
Michel Renfer -
Xaver Aerni