(#335) Re: poll

Message posted to the Speak Freely Forum
  by Anshuman Ag.... on Sun, 3 Aug 2003 02:50:20 +0200 (MEST).
  http://www.fourmilab.ch/wb/speak-freely.pl?rev=335

  Reply To: (#333) Re: poll
  Author:   John Walker
  Date:     2003-08-03 00:05

For me, no also but my family in India has that connection (static ip is 10x
more expensive there !!!) . John brings up a good point and in any case till
IPv6 infrastructure spreads NAT is a solution I know a lot of people use. For
what is is ( not ) worth Windows XP just distributed their IPV6 protocol using
windows update recommended updates. I believe Linux kernel 2.4 supports it
already?

: For me, no also, although in the process of
: researching the NAT issue in the last six
: months, I used Speak Freely behind a 3COM
: 3C16770 firewall configured in NAT mode with
: static routing of ports 2074-2076 which, of
: course, worked fine.

: When running a poll, or any other kind of
: sampling study, one must take into account
: selection effects. Suppose we discover that
: 99% of Speak Freely users are not behind NAT
: boxes. What does that mean? Well, it may
: mean that the only people who manage to get
: Speak Freely to work are those not behind a
: NAT box plus those few NATted users able to
: set up static mappings. There's no way to
: count the NATted users who haven't been able
: to get Speak Freely to work, since they
: don't subscribe to the list nor read the
: forum and hence won't reply to the poll.

: I'm not making an argument here one way or
: another, just pointing out something which
: happens all the time in science. When
: astronomers study the properties of the most
: distant galaxies, they have to take into
: account the fact that their sample is
: restricted to the *brightest* galaxies at
: that distance, since they can't see the
: dimmer ones.


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