Re: [Pearg] I-D Action: draft-irtf-pearg-censorship-04.txt
Stephane Bortzmeyer <bortzmeyer@nic.fr> Tue, 21 July 2020 15:21 UTC
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Date: Tue, 21 Jul 2020 17:21:04 +0200
From: Stephane Bortzmeyer <bortzmeyer@nic.fr>
To: Joseph Lorenzo Hall <hall@isoc.org>
Cc: "pearg@irtf.org" <pearg@irtf.org>
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Subject: Re: [Pearg] I-D Action: draft-irtf-pearg-censorship-04.txt
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On Mon, Jul 13, 2020 at 06:51:19PM +0000, Joseph Lorenzo Hall <hall@isoc.org> wrote a message of 238 lines which said: > Title : A Survey of Worldwide Censorship Techniques > Filename : draft-irtf-pearg-censorship-04.txt A general issue with drafts dealing with current techniques is that it is hard to stay up-to-date (a reason to publish rapidly). For instance: > For example, a censor could block the default HTTPS port, port 443, > thereby forcing most users to fall back to HTTP. Is it still true today? With HSTS (RFC 6797) and many Web sites redirecting unconditionnaly from http: to https: I wonder if it could still be used. Also: > When in-window sequencing is allowed, it is trivial to conduct a > Blind RST Injection: Trivial may be too strong, if RFC 5961 is used. Referring to RFC 5961, section 5.1 may be a good idea (the draft mentions a fixed number of possible windows, which does not seem true). > while the term "blind" injection implies the censor doesn't know any > sensitive (encrypted) ? "blind" refers to being off-path, it has nothing to do with encryption. > authoritative resolvers There is no such thing as an authoritative resolver. Either it is a resolver, or it is an authoritative name server. (Source: RFC 8499, section 6) Editorial: > This in-window recommendation is important, as if it is implemented > it allows for successful Blind RST Injection attacks [Netsec-2011]. Not clear. > [Bortzmayer-2015] > Bortzmayer, S., "DNS Censorship (DNS Lies) As Seen By RIPE > Atlas", 2015, It's Bortzmeyer :-) > [Zmijewski-2014] > Zmijewski, E., "Turkish Internet Censorship Takes a New > Turn", 2014, <http://www.renesys.com/2014/03/turkish- > internet-censorship/>. Moved (without a redirect) with all the Renesys content, after being bought by Oracle. It is now <https://blogs.oracle.com/internetintelligence/turkish-internet-censorship-takes-a-new-turn>
- [Pearg] I-D Action: draft-irtf-pearg-censorship-0… internet-drafts
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Shivan Sahib
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Vittorio Bertola
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Mallory Knodel
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Amelia Andersdotter
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Vittorio Bertola
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Mallory Knodel
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Eric Rescorla
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Eliot Lear
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Vittorio Bertola
- [Pearg] About consent (Was: I-D Action: draft-irt… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Stephane Bortzmeyer
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Juliana Guerra
- Re: [Pearg] I-D Action: draft-irtf-pearg-censorsh… Joseph Lorenzo Hall