FITUG e.V. Förderverein Informationstechnik und Gesellschaft

.sex Considered Dangerous

<http://www.ietf.org/rfc/rfc3675.txt>

Network Working Group D. Eastlake 3rd Request for Comments: 3675 Motorola Laboratories Category: Informational February 2004

.sex Considered Dangerous

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2004). All Rights Reserved.

Abstract

Periodically there are proposals to mandate the use of a special top level name or an IP address bit to flag "adult" or "unsafe" material or the like. This document explains why this is an ill considered idea from the legal, philosophical, and particularly, the technical points of view.

Table of Contents

1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 2 2. Background . . . . . . . . . . . . . . . . . . . . . . . . . . 2 3. Legal and Philosophical Problems . . . . . . . . . . . . . . . 4 4. Technical Difficulties . . . . . . . . . . . . . . . . . . . . 6 4.1. Content Filtering Using Names. . . . . . . . . . . . . . 7 4.1.1. Linguistic Problems. . . . . . . . . . . . . . . 7 4.1.2. Explosion of Top Level Domain Names (TLDs) . . . 8 4.1.3. You Can't Control What Names Point At You! . . . 9 4.1.4. Particular Protocol Difficulties . . . . . . . . 10 4.1.4.1. Electronic Mail (SMTP) . . . . . . . . 10 4.1.4.2. Web Access (HTTP). . . . . . . . . . . 11 4.1.4.3. News (NNTP). . . . . . . . . . . . . . 12 4.1.4.4. Internet Relay Chat (IRC). . . . . . . 13 4.2. Content Filtering Using IP Addressing. . . . . . . . . . 13 4.2.1. Hierarchical Routing . . . . . . . . . . . . . . 14 4.2.2. IP Version 4 Addresses . . . . . . . . . . . . . 15 4.2.3. IP Version 6 Addresses . . . . . . . . . . . . . 15 4.3. PICS Labels. . . . . . . . . . . . . . . . . . . . . . . 16 5. Security Considerations. . . . . . . . . . . . . . . . . . . . 17 6. Conclusions. . . . . . . . . . . . . . . . . . . . . . . . . . 17 7. References . . . . . . . . . . . . . . . . . . . . . . . . . . 18 7.1. Normative References . . . . . . . . . . . . . . . . . . 18 7.2. Informative References . . . . . . . . . . . . . . . . . 19 8. Acknowledgement. . . . . . . . . . . . . . . . . . . . . . . . 21 9. Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . 21 10. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 22

1. Introduction

Periodically there are proposals to mandate the use of a special top level name or an IP address bit to flag "adult" or "unsafe" material or the like. This document explains why this is an ill considered idea from the legal, philosophical, and the technical points of view.

[...]

Zurück