Email Protective Marking Standard for the Australian Government

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3. ReferencesKeyReference[1] Australian Government Information Security Management Protocol, July 2011http://www.protectivesecurity.gov.au/Pages/default.aspx[2] Australian Government security classification system July 2011http://www.protectivesecurity.gov.au/Pages/default.aspx[3] RFC2119 (BCP14), Key words for use in RFCs to Indicate Requirement Levels,March 1997http://www.ietf.org/rfc/rfc2119.txt[4] RFC2822, Internet Message Format, April 2001http://www.ietf.org/rfc/rfc2822.txt[5] RFC2234, Augmented BNF for Syntax Specifications: ABNF, November 1997http://www.ietf.org/rfc/rfc2234.txt[6] Australian Government Recordkeeping Metadata Standard (version 2.0, July2008)http://www.naa.gov.au/Images/AGRkMS_Final%20Edit_16%2007%2008_Revised_tcm16-47131.pdfandAustralian Government Recordkeeping Metadata Standard ImplementationGuidelines (version 2.0 June 2011)http://www.naa.gov.au/Images/AGRkMS%20Implementation%20Guidelines_tcm16-50156.pdfNational Archives of Australia[7] ISM, Australian Government Information Security Manual, 2012http://www.dsd.gov.au/infosec/ism/index.htm[8] RFC3339, Date and Time on the Internet: Timestamps, July 2002http://www.ietf.org/rfc/rfc3339.txt[9] RFC2821, Simple Mail Transfer Protocol, April 2001http://www.ietf.org/rfc/rfc2821.txt22
4. GlossaryThese definitions have been sourced from a number of IETF standards, the ISM and thePSPF.CaveatA marking that indicates that the information has specialrequirements in addition to those indicated by any securityclassification. The term covers codewords, source codewords,releasability indicators and special-handing caveats.DLMDissemination Limiting Markers are markings for informationwhere disclosure may be limited or prohibited by legislation,or where it may otherwise require special handling. DLMs areNOT security caveats. Where the information is unclassified,they provide the lowest level of protection for officialinformation.Email Gateway A device or a system that receives mail from a client system inone transport environment and transmits it to a server systemin another transport environment.Email ProtectiveMarking ReaderEmail ProtectiveMarking WriterHostIETFISOITUAn agent which reads and interprets a protective markingfrom an email message. This may be a human, an emailgateway or an email client, or other.An agent which inserts a protective marking into an emailmessage. This may be a human, or an extension to an emailclient, or other.A computer system attached to the Internet (or, in some cases,to a private TCP/IP network) and supporting the SMTPprotocol.Internet Engineering Task Force – A large open internationalcommunity of network designers, operators, vendors andresearchers concerned with the evolution of the Internetarchitecture and the smooth operation of the Internet – seehttp://www.ietf.org/International Organization for Standardization - seehttp://www.iso.org/International Telecommunication Union – An internationalorganization within the United Nations System wheregovernments and the private sector coordinate global telecom23
Page 1 and 2: Email Protective Marking Standardfo
Page 3 and 4: AbstractThis Standard defines the f
Page 5 and 6: Changes from Version 1.0 26Changes
Page 7 and 8: 1.2 AudienceThis Standard is intend
Page 9 and 10: 2.4 NamespaceThe protective marking
Page 11 and 12: 2.10 Regular Expression DefinitionT
Page 13 and 14: Values for DLMs that may be conditi
Page 15 and 16: NS appears in the Internet Message
Page 17 and 18: 2.11.1 Base tokenscomma-FWS = "," F
Page 19 and 20: 2.11.6 Caveat rulescaveat-tag = %d6
Page 21: 2.11.13 Version rulesversion-tag =
Page 25 and 26: 5. Appendix AA5.1 Change LogThis is
Page 27 and 28: Changes from 2005.3Specified Intern
Page 29 and 30: 6. Appendix B6.1 ExamplesFor the sa
Page 32: A message containing SECRET informa

Email Protective Marking Standard for the Australian Government

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