nanog mailing list archives
Re: Network Level Content Blocking (UK)
From: Leigh Porter <leigh.porter () ukbroadband com>
Date: Thu, 07 Jun 2007 20:13:34 +0100
Sean Donelan wrote:
On Thu, 7 Jun 2007, Sean Donelan wrote:On Thu, 7 Jun 2007, Chris L. Morrow wrote:Its not "content" blocking, its source/destination blocking.oh, so null routes? I got the impression it was application-aware, or atleast port-aware... If it's proxying or doing anything more than port-level blocking it's likely it sees content as well, or COULD. Either way, it's not like it's effective for anything except the m ost casual of users :(Its more than null routes, but not much more. The router does a re-route on a list of network/IP address, and then for the protocols the redirector box understands (i.e. pretty much only HTTP) it matches part of the application/URL pattern.So IWF can block only one part of a sub-tree of a popular shared webhosting site *IF* is one of a few application protocols.Sorry, clicked send before finishing.BUT the important thing is the network operator and routers don't actually look at the content. If the same bad content (picture, video, whatever) appears somewhere else that isn't on the IWF list, it won't be blocked.And likewise if the content at the source/destination changes/removed, e.g. the picture disappears, the destination will continue to be blocked until IWF updates their bad list even though nothing bad still at the destination.
But this is OK as it's unlikely that something good and wholesome will be on http://n.n.n.n/foobardodgypr0n.html
Also the lists are actually updated fairly regularly. -- Leigh Porter
Current thread:
- Re: Network Level Content Blocking (UK), (continued)
- Re: Network Level Content Blocking (UK) Iljitsch van Beijnum (Jun 07)
- Re: Network Level Content Blocking (UK) Sean Donelan (Jun 07)
- Re: Network Level Content Blocking (UK) Iljitsch van Beijnum (Jun 07)
- Re: Network Level Content Blocking (UK) Valdis . Kletnieks (Jun 07)
- Re: Network Level Content Blocking (UK) Leigh Porter (Jun 07)
- Re: Network Level Content Blocking (UK) William Allen Simpson (Jun 07)
- Re: Network Level Content Blocking (UK) Deepak Jain (Jun 07)
- Re: Network Level Content Blocking (UK) Simon Waters (Jun 08)
- Re: Network Level Content Blocking (UK) Iljitsch van Beijnum (Jun 07)
- Re: Network Level Content Blocking (UK) Sean Donelan (Jun 07)
- Re: Network Level Content Blocking (UK) Leigh Porter (Jun 07)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Leigh Porter (Jun 07)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Alexander Harrowell (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Leigh Porter (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. David Freedman (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Leigh Porter (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Adrian Chadd (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Alexander Harrowell (Jun 08)
- RE: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. michael.dillon (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Iljitsch van Beijnum (Jun 08)
- Re: Network Level Content Blocking (UK) for people who cant be bothered to read the article.. Leigh Porter (Jun 08)