[rfc-dist] RFC 4963 on IPv4 Reassembly Errors at High Data Rates
rfc-editor at rfc-editor.org (rfc-editor@rfc-editor.org) Fri, 27 July 2007 21:33 UTC
From: "rfc-editor at rfc-editor.org"
Date: Fri, 27 Jul 2007 14:33:30 -0700
Subject: [rfc-dist] RFC 4963 on IPv4 Reassembly Errors at High Data Rates
Message-ID: <20070727213330.DE22BDAC1B@bosco.isi.edu>
A new Request for Comments is now available in online RFC libraries. RFC 4963 Title: IPv4 Reassembly Errors at High Data Rates Author: J. Heffner, M. Mathis, B. Chandler Status: Informational Date: July 2007 Mailbox: jheffner at psc.edu, mathis at psc.edu, bchandle at gmail.com Pages: 10 Characters: 22399 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-heffner-frag-harmful-05.txt URL: http://www.rfc-editor.org/rfc/rfc4963.txt IPv4 fragmentation is not sufficiently robust for use under some conditions in today's Internet. At high data rates, the 16-bit IP identification field is not large enough to prevent frequent incorrectly assembled IP fragments, and the TCP and UDP checksums are insufficient to prevent the resulting corrupted datagrams from being delivered to higher protocol layers. This note describes some easily reproduced experiments demonstrating the problem, and discusses some of the operational implications of these observations. This memo provides information for the Internet community. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF list and the RFC-DIST list. Requests to be added to or deleted from the IETF distribution list should be sent to IETF-REQUEST at IETF.ORG. Requests to be added to or deleted from the RFC-DIST distribution list should be sent to RFC-DIST-REQUEST at RFC-EDITOR.ORG. Details on obtaining RFCs via FTP or EMAIL may be obtained by sending an EMAIL message to rfc-info at RFC-EDITOR.ORG with the message body help: ways_to_get_rfcs. For example: To: rfc-info at RFC-EDITOR.ORG Subject: getting rfcs help: ways_to_get_rfcs Requests for special distribution should be addressed to either the author of the RFC in question, or to RFC-Manager at RFC-EDITOR.ORG. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. Submissions for Requests for Comments should be sent to RFC-EDITOR at RFC-EDITOR.ORG. Please consult RFC 2223, Instructions to RFC Authors, for further information. The RFC Editor Team USC/Information Sciences Institute ...
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