Hadmut Danisch wrote:
Is there any? If not, shouldn't there be one?
E.g. as an RFC?
Here is an old Internet Draft, which IESG at that time refused
to make it RFC, because some wanted to call NAT providers ISPs.
INTERNET DRAFT M. Ohta
draft-ohta-isps-00.txt Tokyo Institute of Technology
The Internet and ISPs
Status of this Memo
This document is an Internet-Draft and is in full conformance with
all provisions of Section 10 of RFC2026.
Internet-Drafts are working documents of the Internet Engineering
Task Force (IETF), its areas, and its working groups. Note that
other groups may also distribute working documents as Internet-
Internet-Drafts are draft documents valid for a maximum of six months
and may be updated, replaced, or obsoleted by other documents at any
time. It is inappropriate to use Internet- Drafts as reference
material or to cite them other than as "work in progress."
The list of current Internet-Drafts can be accessed at
The list of Internet-Draft Shadow Directories can be accessed at
Copyright (C) The Internet Society (May/1/2000). All Rights
This memo gives definitions on the Internet and ISPs (Internet
1. The Internet
The Internet is a public IP [1, 2] network globally connected end to
end  at the Internetworking layer.
A network provider is an ISP, if and only if its network, including
access parts of the network to its subscribers, is a part of the
As such, ISPs must preserve the end to end and globally connected
principles of the Internet at the Internetworking layer.
M. Ohta Expires on January 1, 2001 [Page 1]
INTERNET DRAFT ISPs July 2000
A network provider of a private IP or non-IP network, which is
connected to the Internet through an application and/or transport
gateway is not an ISP.
Dispit the requirement of "global connectivity", a network provider
may use transparent firewalls to the Internet with no translation to
filter out a limited number of problematic well known ports of TCP
and/or UDP and can still be an ISP. However, if filtering out is a
default and only a limited number of protocols are allowed to pass
the firewalls (which means snooping of transport/application layer
protocols), it can not be regarded as full connectivity to the
Internet and the provider is not an ISP.
3. Security Considerations
While some people may think that filtering by application/transport
gateways offer some sort of security, they should recognize that
macro virus in e-mails can pass and are passing through all such
 J. Postel, "Internet Protocol", RFC791, September 1981.
 S. Deering, R. Hinden, "Internet Protocol, Version 6 (IPv6)
Specification", RFC2460, December 1998.
 B. Carpenter, "Architectural Principles of the Internet",
RFC1958, June 1996.
5. Author's Address
Computer Center, Tokyo Institute of Technology
2-12-1, O-okayama, Meguro-ku, Tokyo 152-8550, JAPAN
M. Ohta Expires on January 1, 2001 [Page 2]
INTERNET DRAFT ISPs July 2000
6. Full Copyright Statement
"Copyright (C) The Internet Society (July/1/2000). All Rights
This document and translations of it may be copied and furnished to
others, and derivative works that comment on or otherwise explain it
or assist in its implementation may be prepared, copied, published
and distributed, in whole or in part, without restriction of any
kind, provided that the above copyright notice and this paragraph are
included on all such copies and derivative works. However, this
document itself may not be modified in any way, such as by removing
the copyright notice or references to the Internet Society or other
Internet organizations, except as needed for the purpose of
developing Internet standards in which case the procedures for
copyrights defined in the Internet Standards process must be
followed, or as required to translate it into languages other than
The limited permissions granted above are perpetual and will not be
revoked by the Internet Society or its successors or assigns.
This document and the information contained herein is provided on an
"AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
M. Ohta Expires on January 1, 2001 [Page 3]
Ietf mailing list