Child pornography blocking again

[tor-operator at sky-haven.net]

Kraktus wrote:

> Tor already has censorship hooks.  Tor nodes are already in
> control of their own exit policies.  Certain ports are already
> blocked by default.
> 
> This would simply provide Tor nodes with another tool to
> control what leaves their nodes.  And if Tor nodes didn't want
> to use it, they wouldn't have to.

Hello,

I would assert a disagreement here, and indicate that "exitpolicy" is a 
*traffic* obstruction hook, not a censorship hook.

Key different: the ExitPolicy strictly works on the basis of the Layer3/Layer4 
target address.  Your proposed censorship hook seems to require a continually 
updated set of blocks on the basis of content.  ExitPolicy can't tell an HTTP 
connection for wikipedia from an HTTP connection for a bit image.  Please see 
a reasonable reference for "usenet death penalty" if this is in any way 
unclear.