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+Network Working Group                                        J. Reynolds
+Request for Comments: 961                                      J. Postel
+                                                                     ISI
+Obsoletes: RFCs 944, 924, 901, 880, 840                    December 1985
+
+
+                    OFFICIAL ARPA-INTERNET PROTOCOLS
+
+
+STATUS OF THIS MEMO
+
+   This memo is an official status report on the protocols used in the
+   ARPA-Internet community.  Distribution of this memo is unlimited.
+
+INTRODUCTION
+
+   This RFC identifies the documents specifying the official protocols
+   used in the Internet.  Comments indicate any revisions or changes
+   planned.
+
+   To first order, the official protocols are those in the "Internet
+   Protocol Transition Workbook" (IPTW) dated March 1982.  There are
+   several protocols in use that are not in the IPTW.  A few of the
+   protocols in the IPTW have been revised.  Notably, the mail protocols
+   have been revised and issued as a volume titled "Internet Mail
+   Protocols" dated November 1982.  Telnet and the most useful Telnet
+   options have been revised and issued as a volume titled "Internet
+   Telnet Protocol and Options" (ITP) dated June 1983.  The File
+   Transfer Protocol has been revised most recently as RFC 959 which is
+   not yet included in any collection.  Some protocols have not been
+   revised for many years, these are found in the old "ARPANET Protocol
+   Handbook" (APH) dated January 1978.  There is also a volume of
+   protocol related information called the "Internet Protocol
+   Implementers Guide" (IPIG) dated August 1982.
+
+   This document is organized as a sketchy outline.  The entries are
+   protocols (e.g., Transmission Control Protocol).  In each entry there
+   are notes on status, specification, comments, other references,
+   dependencies, and contact.
+
+      The STATUS is one of: required, recommended, elective, or
+      experimental.
+
+      The SPECIFICATION identifies the protocol defining documents.
+
+      The COMMENTS describe any differences from the specification or
+      problems with the protocol.
+
+      The OTHER REFERENCES identify documents that comment on or expand
+      on the protocol.
+
+
+
+
+Reynolds & Postel                                               [Page 1]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      The DEPENDENCIES indicate what other protocols are called upon by
+      this protocol.
+
+      The CONTACT indicates a person who can answer questions about the
+      protocol.
+
+      In particular, the status may be:
+
+         required
+
+            - all hosts must implement the required protocol,
+
+         recommended
+
+            - all hosts are encouraged to implement the recommended
+            protocol,
+
+         elective
+
+            - hosts may implement or not the elective protocol,
+
+         experimental
+
+            - hosts should not implement the experimental protocol
+            unless they are participating in the experiment and have
+            coordinated their use of this protocol with the contact
+            person, and
+
+         none
+
+            - this is not a protocol.
+
+         For further information about protocols in general, please
+         contact:
+
+            Joyce Reynolds
+            USC - Information Sciences Institute
+            4676 Admiralty Way
+            Marina del Rey, California  90292-6695
+
+            Phone: (213) 822-1511
+
+            ARPA mail: JKREYNOLDS@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+Reynolds & Postel                                               [Page 2]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+OVERVIEW
+
+   Catenet Model  ------------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  IEN 48 (in IPTW)
+
+      COMMENTS:
+
+         Gives an overview of the organization and principles of the
+         Internet.
+
+         Could be revised and expanded.
+
+      OTHER REFERENCES:
+
+         Leiner, B., Cole R., Postel, J., and D. Mills, "The DARPA
+         Protocol Suite", IEEE INFOCOM 85, Washington, D.C., March 1985.
+         Also in IEEE Communications Magazine, and as ISI/RS-85-153,
+         March 1985.
+
+         Postel, J., "Internetwork Applications Using the DARPA Protocol
+         Suite", IEEE INFOCOM 85, Washington, D.C., March 1985. Also in
+         IEEE Communications Magazine, and as ISI/RS-85-151, April 1985.
+
+         Padlipsky, M.A., "The Elements of Networking Style and other
+         Essays and Animadversions on the Art of Intercomputer
+         Networking", Prentice-Hall, New Jersey, 1985.
+
+         RFC 871 - A Perspective on the ARPANET Reference Model
+
+      DEPENDENCIES:
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                               [Page 3]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+NETWORK LEVEL
+
+   Internet Protocol  --------------------------------------------- (IP)
+
+      STATUS:  Required
+
+      SPECIFICATION:  RFC 791 (in IPTW)
+
+      COMMENTS:
+
+         This is the universal protocol of the Internet.  This datagram
+         protocol provides the universal addressing of hosts in the
+         Internet.
+
+         A few minor problems have been noted in this document.
+
+         The most serious is a bit of confusion in the route options.
+         The route options have a pointer that indicates which octet of
+         the route is the next to be used.  The confusion is between the
+         phrases "the pointer is relative to this option" and "the
+         smallest legal value for the pointer is 4".  If you are
+         confused, forget about the relative part, the pointer begins
+         at 4.
+
+         Another important point is the alternate reassembly procedure
+         suggested in RFC 815.
+
+         Some changes are in the works for the security option.
+
+         Note that ICMP is defined to be an integral part of IP.  You
+         have not completed an implementation of IP if it does not
+         include ICMP.
+
+      OTHER REFERENCES:
+
+         RFC 815 (in IPIG) - IP Datagram Reassembly Algorithms
+
+         RFC 814 (in IPIG) - Names, Addresses, Ports, and Routes
+
+         RFC 816 (in IPIG) - Fault Isolation and Recovery
+
+         RFC 817 (in IPIG) - Modularity and Efficiency in Protocol
+         Implementation
+
+         MIL-STD-1777 - Military Standard Internet Protocol
+
+         RFC 963 - Some Problems with the Specification of the Military
+         Standard Internet Protocol
+
+
+
+Reynolds & Postel                                               [Page 4]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      DEPENDENCIES:
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Internet Control Message Protocol  --------------------------- (ICMP)
+
+      STATUS:  Required
+
+      SPECIFICATION:  RFC 792 (in IPTW)
+
+      COMMENTS:
+
+         The control messages and error reports that go with the
+         Internet Protocol.
+
+         A few minor errors in the document have been noted.
+         Suggestions have been made for additional types of redirect
+         message and additional destination unreachable messages.
+
+         A proposal for two additional ICMP message types is made in
+         RFC 950 "Internet Subnets", Address Mask Request (A1=17), and
+         Address Mask Reply (A2=18).  The details of these ICMP types
+         are subject to change.  Use of these ICMP types is
+         experimental.
+
+         Note that ICMP is defined to be an integral part of IP.  You
+         have not completed an implementation of IP if it does not
+         include ICMP.
+
+      OTHER REFERENCES:  RFC 950
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                               [Page 5]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+HOST LEVEL
+
+   User Datagram Protocol  --------------------------------------- (UDP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 768 (in IPTW)
+
+      COMMENTS:
+
+         Provides a datagram service to applications.  Adds port
+         addressing to the IP services.
+
+         The only change noted for the UDP specification is a minor
+         clarification that if in computing the checksum a padding octet
+         is used for the computation it is not transmitted or counted in
+         the length.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Transmission Control Protocol  -------------------------------- (TCP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 793 (in IPTW)
+
+      COMMENTS:
+
+         Provides reliable end-to-end data stream service.
+
+         Many comments and corrections have been received for the TCP
+         specification document.  These are primarily document bugs
+         rather than protocol bugs.
+
+         Event Processing Section:  There are many minor corrections and
+         clarifications needed in this section.
+
+         Push:  There are still some phrases in the document that give a
+         "record mark" flavor to the push.  These should be further
+         clarified.  The push is not a record mark.
+
+         Urgent:  Page 17 is wrong.  The urgent pointer points to the
+         last octet of urgent data (not to the first octet of non-urgent
+         data).
+
+
+
+Reynolds & Postel                                               [Page 6]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+         Listening Servers:  Several comments have been received on
+         difficulties with contacting listening servers.  There should
+         be some discussion of implementation issues for servers, and
+         some notes on alternative models of system and process
+         organization for servers.
+
+         Maximum Segment Size:  The maximum segment size option should
+         be generalized and clarified.  It can be used to either
+         increase or decrease the maximum segment size from the default.
+         The TCP Maximum Segment Size is the IP Maximum Datagram Size
+         minus forty.  The default IP Maximum Datagram Size is 576.  The
+         default TCP Maximum Segment Size is 536.  For further
+         discussion, see RFC 879.
+
+         Idle Connections:  There have been questions about
+         automatically closing idle connections.  Idle connections are
+         ok, and should not be closed.  There are several cases where
+         idle connections arise, for example, in Telnet when a user is
+         thinking for a long time following a message from the server
+         computer before his next input.  There is no TCP "probe"
+         mechanism, and none is needed.
+
+         Queued Receive Data on Closing:  There are several points where
+         it is not clear from the description what to do about data
+         received by the TCP but not yet passed to the user,
+         particularly when the connection is being closed.  In general,
+         the data is to be kept to give to the user if he does a RECV
+         call.
+
+         Out of Order Segments:  The description says that segments that
+         arrive out of order, that is, are not exactly the next segment
+         to be processed, may be kept on hand.  It should also point out
+         that there is a very large performance penalty for not doing
+         so.
+
+         User Time Out:  This is the time out started on an open or send
+         call.  If this user time out occurs the user should be
+         notified, but the connection should not be closed or the TCB
+         deleted.  The user should explicitly ABORT the connection if he
+         wants to give up.
+
+      OTHER REFERENCES:
+
+         RFC 813 (in IPIG) - Window and Acknowledgement Strategy in TCP
+
+         RFC 814 (in IPIG) - Names, Addresses, Ports, and Routes
+
+         RFC 816 (in IPIG) - Fault Isolation and Recovery
+
+
+
+Reynolds & Postel                                               [Page 7]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+         RFC 817 (in IPIG) - Modularity and Efficiency in Protocol
+         Implementation
+
+         RFC 879 - TCP Maximum Segment Size
+
+         RFC 889 - Internet Delay Experiments
+
+         RFC 896 - TCP/IP Congestion Control
+
+         MIL-STD-1778 - Military Standard Transmission Control Protocol
+
+         RFC 964 - Some Problems with the Specification of the Military
+         Standard Transmission Control Protocol
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Host Monitoring Protocol  ------------------------------------- (HMP)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 869
+
+      COMMENTS:
+
+         This is a good tool for debugging protocol implementations in
+         remotely located computers.
+
+         This protocol is used to monitor Internet gateways and the
+         TACs.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Hinden@BBN-UNIX.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                               [Page 8]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Cross Net Debugger  ------------------------------------------ (XNET)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  IEN 158
+
+      COMMENTS:
+
+         A debugging protocol, allows debugger like access to remote
+         systems.
+
+         This specification should be updated and reissued as an RFC.
+
+      OTHER REFERENCES:  RFC 643
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   "Stub" Exterior Gateway Protocol  ----------------------------- (EGP)
+
+      STATUS:  Recommended for Gateways
+
+      SPECIFICATION:  RFC 888, RFC 904
+
+      COMMENTS:
+
+         The protocol used between gateways of different administrations
+         to exchange routing information.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 827, RFC 890
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Mills@USC-ISID.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                               [Page 9]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Gateway Gateway Protocol  ------------------------------------- (GGP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 823
+
+      COMMENTS:
+
+         The gateway protocol now used in the core gateways.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Brescia@BBN-UNIX.ARPA
+
+   Multiplexing Protocol  ---------------------------------------- (MUX)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  IEN 90
+
+      COMMENTS:
+
+         Defines a capability to combine several segments from different
+         higher level protocols in one IP datagram.
+
+         No current experiment in progress.  There is some question as
+         to the extent to which the sharing this protocol envisions can
+         actually take place.  Also, there are some issues about the
+         information captured in the multiplexing header being (a)
+         insufficient, or (b) over specific.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 10]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Stream Protocol  ----------------------------------------------- (ST)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  IEN 119
+
+      COMMENTS:
+
+         A gateway resource allocation protocol designed for use in
+         multihost real time applications.
+
+         The implementation of this protocol has evolved and may no
+         longer be consistent with this specification.  The document
+         should be updated and issued as an RFC.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol
+
+      CONTACT: jwf@LL-EN.ARPA
+
+   Network Voice Protocol  ------------------------------------ (NVP-II)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  ISI Internal Memo
+
+      COMMENTS:
+
+         Defines the procedures for real time voice conferencing.
+
+         The specification is an ISI Internal Memo which should be
+         updated and issued as an RFC.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 741
+
+      DEPENDENCIES:  Internet Protocol, Stream Protocol
+
+      CONTACT:  Casner@USC-ISIB.ARPA
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 11]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Reliable Data Protocol  --------------------------------------- (RDP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 908
+
+      COMMENTS:
+
+         This protocol is designed to efficiently support the bulk
+         transfer of data for such host monitoring and control
+         applications as loading/dumping and remote debugging.  The
+         protocol is intended to be simple to implement but still be
+         efficient in environments where there may be long transmission
+         delays and loss or non-sequential delivery of message segments.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:  Internet Protocol
+
+      CONTACT:  CWelles@BBN-UNIX.ARPA
+
+   Internet Reliable Transaction Protocol  ---------------------- (IRTP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 938
+
+      COMMENTS:
+
+         This protocol is a transport level host to host protocol
+         designed for an internet environment.  While the issues
+         discussed may not be directly relevant to the research problems
+         of the DARPA community, they may be interesting to a number of
+         researchers and implementors.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:  Internet Protocol
+
+      CONTACT:  Trudy@ACC.ARPA
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 12]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+APPLICATION LEVEL
+
+   Telnet Protocol  ------------------------------------------- (TELNET)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 854 (in "Internet Telnet Protocol and
+      Options")
+
+      COMMENTS:
+
+         The protocol for remote terminal access.
+
+         This has been revised since the IPTW.  RFC 764 in IPTW is now
+         obsolete.
+
+      OTHER REFERENCES:
+
+         MIL-STD-1782 - Telnet Protocol
+
+      DEPENDENCIES:  Transmission Control Protocol
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 13]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Telnet Options  ------------------------------------ (TELNET-OPTIONS)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  General description of options:  RFC 855
+      (in "Internet Telnet Protocol and Options")
+
+      Number   Name                                RFC  NIC  ITP APH USE
+      ------   ---------------------------------   --- ----- --- --- ---
+         0     Binary Transmission                 856 ----- yes obs yes
+         1     Echo                                857 ----- yes obs yes
+         2     Reconnection                        ... 15391  no yes  no
+         3     Suppress Go Ahead                   858 ----- yes obs yes
+         4     Approx Message Size Negotiation     ... 15393  no yes  no
+         5     Status                              859 ----- yes obs yes
+         6     Timing Mark                         860 ----- yes obs yes
+         7     Remote Controlled Trans and Echo    726 39237  no yes  no
+         8     Output Line Width                   ... 20196  no yes  no
+         9     Output Page Size                    ... 20197  no yes  no
+        10     Output Carriage-Return Disposition  652 31155  no yes  no
+        11     Output Horizontal Tabstops          653 31156  no yes  no
+        12     Output Horizontal Tab Disposition   654 31157  no yes  no
+        13     Output Formfeed Disposition         655 31158  no yes  no
+        14     Output Vertical Tabstops            656 31159  no yes  no
+        15     Output Vertical Tab Disposition     657 31160  no yes  no
+        16     Output Linefeed Disposition         658 31161  no yes  no
+        17     Extended ASCII                      698 32964  no yes  no
+        18     Logout                              727 40025  no yes  no
+        19     Byte Macro                          735 42083  no yes  no
+        20     Data Entry Terminal                 732 41762  no yes  no
+        21     SUPDUP                          734 736 42213  no yes  no
+        22     SUPDUP Output                       749 45449  no  no  no
+        23     Send Location                       779 -----  no  no  no
+        24     Terminal Type                       930 -----  no  no  no
+        25     End of Record                       885 -----  no  no  no
+        26     TACACS User Identification          927 -----  no  no  no
+        27     Output Marking                      933 -----  no  no  no
+        28     Terminal Location Number            946 -----  no  no  no
+       255     Extended-Options-List               861 ----- yes obs yes
+
+                                                        (obs = obsolete)
+
+      The ITP column indicates if the specification is included in the
+      Internet Telnet Protocol and Options.  The APH column indicates if
+      the specification is included in the ARPANET Protocol Handbook.
+      The USE column of the table above indicates which options are in
+      general use.
+
+
+
+
+Reynolds & Postel                                              [Page 14]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      COMMENTS:
+
+         The Binary Transmission, Echo, Suppress Go Ahead, Status,
+         Timing Mark, and Extended Options List options have been
+         recently updated and reissued.  These are the most frequently
+         implemented options.
+
+         The remaining options should be reviewed and the useful ones
+         should be revised and reissued.  The others should be
+         eliminated.
+
+         The following are recommended:  Binary Transmission, Echo,
+         Suppress Go Ahead, Status, Timing Mark, and Extended Options
+         List.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Telnet
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   File Transfer Protocol  --------------------------------------- (FTP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 959
+
+      COMMENTS:
+
+         The protocol for moving files between Internet hosts.  Provides
+         for access control and negotiation of file parameters.
+
+         The following new optional commands are included in this
+         edition of the specification:  Change to Parent Directory
+         (CDUP), Structure Mount (SMNT), Store Unique (STOU), Remove
+         Directory (RMD), Make Directory (MKD), Print Directory (PWD),
+         and System (SYST).  Note that this specification is compatible
+         with the previous edition (RFC 765).
+
+      OTHER REFERENCES:
+
+         RFC 678 - Document File Format Standards
+
+         MIL-STD-1780 - File Transfer Protocol
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+Reynolds & Postel                                              [Page 15]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Trivial File Transfer Protocol  ------------------------------ (TFTP)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 783 (in IPTW)
+
+      COMMENTS:
+
+         A very simple file moving protocol, no access control is
+         provided.
+
+         This is in use in several local networks.
+
+         Ambiguities in the interpretation of several of the transfer
+         modes should be  clarified, and additional transfer modes could
+         be defined.  Additional error codes could be defined to more
+         clearly identify problems.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Simple File Transfer Protocol  ------------------------------- (SFTP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 913
+
+      COMMENTS:
+
+         SFTP is a simple file transfer protocol.  It fills the need of
+         people wanting a protocol that is more useful than TFTP but
+         easier to implement (and less powerful) than FTP.  SFTP
+         supports user access control, file transfers, directory
+         listing, directory changing, file renaming and deleting.
+
+         SFTP can be implemented with any reliable 8-bit byte stream
+         oriented protocol, this document describes its TCP
+         specification.  SFTP uses only one TCP connection; whereas TFTP
+         implements a connection over UDP, and FTP uses two TCP
+         connections (one using the TELNET protocol).
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+
+
+Reynolds & Postel                                              [Page 16]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: MKL@SRI-NIC.ARPA
+
+   Simple Mail Transfer Protocol  ------------------------------- (SMTP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 821 (in "Internet Mail Protocols")
+
+      COMMENTS:
+
+         The procedure for transmitting computer mail between hosts.
+
+         This has been revised since the IPTW, it is in the "Internet
+         Mail Protocols" volume of November 1982.  RFC 788 (in IPTW) is
+         obsolete.
+
+         There have been many misunderstandings and errors in the early
+         implementations.  Some documentation of these problems can be
+         found in the file [ISIB]<SMTP>MAIL.ERRORS.
+
+         Some minor differences between RFC 821 and RFC 822 should be
+         resolved.
+
+      OTHER REFERENCES:
+
+         RFC 822 - Mail Header Format Standards
+
+            This has been revised since the IPTW, it is in the "Internet
+            Mail Protocols" volume of November 1982.  RFC 733 (in IPTW)
+            is obsolete.  Further revision of RFC 822 is needed to
+            correct some minor errors in the details of the
+            specification.
+
+         MIL-STD-1781 - Simple Mail Transfer Protocol (SMTP)
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 17]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Resource Location Protocol  ----------------------------------- (RLP)
+
+      STATUS:   Elective
+
+      SPECIFICATION:   RFC 887
+
+      COMMENTS:
+
+         A resource location protocol for use in the ARPA-Internet.
+         This protocol utilizes the User Datagram Protocol (UDP) which
+         in turn calls on the Internet Protocol to deliver its
+         datagrams.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: User Datagram Protocol
+
+      CONTACT:   Accetta@CMU-CS-A.ARPA
+
+   Loader Debugger Protocol  ------------------------------------- (LDP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 909
+
+      COMMENTS:
+
+         Specifies a protocol for loading, dumping and debugging target
+         machines from hosts in a network environment.  It is also
+         designed to accommodate a variety of target CPU types.  It
+         provides a powerful set of debugging services, while at the
+         same time, it is structured so that a simple subset may be
+         implemented in applications like boot loading where efficiency
+         and space are at a premium.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:  Reliable Data Protocol
+
+      CONTACT:  Hinden@BBN-UNIX.ARPA
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 18]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Remote Job Entry  --------------------------------------------- (RJE)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 407 (in APH)
+
+      COMMENTS:
+
+         The general protocol for submitting batch jobs and retrieving
+         the results.
+
+         Some changes needed for use with TCP.
+
+         No known active implementations.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: File Transfer Protocol
+                    Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Remote Job Service  ---------------------------------------- (NETRJS)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 740 (in APH)
+
+      COMMENTS:
+
+         A special protocol for submitting batch jobs and retrieving the
+         results used with the UCLA IBM OS system.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+         Revision in progress.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Braden@UCLA-CCN.ARPA
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 19]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Remote Telnet Service  ------------------------------------ (RTELNET)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 818
+
+      COMMENTS:
+
+         Provides special access to user Telnet on a remote system.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Telnet, Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Graphics Protocol  --------------------------------------- (GRAPHICS)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  NIC 24308 (in APH)
+
+      COMMENTS:
+
+         The protocol for vector graphics.
+
+         Very minor changes needed for use with TCP.
+
+         No known active implementations.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Telnet, Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 20]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Echo Protocol  ----------------------------------------------- (ECHO)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 862
+
+      COMMENTS:
+
+         Debugging protocol, sends back whatever you send it.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Discard Protocol  ----------------------------------------- (DISCARD)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 863
+
+      COMMENTS:
+
+         Debugging protocol, throws away whatever you send it.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Character Generator Protocol  ----------------------------- (CHARGEN)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 864
+
+      COMMENTS:
+
+         Debugging protocol, sends you ASCII data.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+
+
+Reynolds & Postel                                              [Page 21]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Quote of the Day Protocol  ---------------------------------- (QUOTE)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 865
+
+      COMMENTS:
+
+         Debugging protocol, sends you a short ASCII message.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Active Users Protocol  -------------------------------------- (USERS)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 866
+
+      COMMENTS:
+
+         Lists the currently active users.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Finger Protocol  ------------------------------------------- (FINGER)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 742 (in APH)
+
+      COMMENTS:
+
+         Provides information on the current or most recent activity of
+         a user.
+
+         Some extensions have been suggested.
+
+
+
+Reynolds & Postel                                              [Page 22]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+         Some changes are are needed for TCP.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   WhoIs Protocol  ------------------------------------------- (NICNAME)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 954
+
+      COMMENTS:
+
+         Accesses the ARPANET Directory database.  Provides a way to
+         find out about people, their addresses, phone numbers,
+         organizations, and mailboxes.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Feinler@SRI-NIC.ARPA
+
+   Domain Name Protocol  -------------------------------------- (DOMAIN)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 881, 882, 883
+
+      COMMENTS:
+
+      OTHER REFERENCES:
+
+         RFC 920 - Domain Requirements
+
+         RFC 921 - Domain Name Implementation Schedule - Revised
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Mockapetris@USC-ISIB.ARPA
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 23]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   HOSTNAME Protocol  --------------------------------------- (HOSTNAME)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 953
+
+      COMMENTS:
+
+         Accesses the Registered Internet Hosts database (HOSTS.TXT).
+         Provides a way to find out about a host in the Internet, its
+         Internet Address, and the protocols it implements.
+
+      OTHER REFERENCES:
+
+         RFC 952 - Host Table Specification
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Feinler@SRI-NIC.ARPA
+
+   Host Name Server Protocol  ----------------------------- (NAMESERVER)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  IEN 116 (in IPTW)
+
+      COMMENTS:
+
+         Provides machine oriented procedure for translating a host name
+         to an Internet Address.
+
+         This specification has significant problems:  1) The name
+         syntax is out of date.  2) The protocol details are ambiguous,
+         in particular, the length octet either does or doesn't include
+         itself and the op code.  3) The extensions are not supported by
+         any known implementation.
+
+         This protocol is now abandoned in favor of the DOMAIN protocol.
+         Further implementations of this protocol are not advised.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+Reynolds & Postel                                              [Page 24]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   CSNET Mailbox Name Server Protocol  ---------------------- (CSNET-NS)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  CS-DN-2
+
+      COMMENTS:
+
+         Provides access to the CSNET data base of users to give
+         information about users names, affiliations, and mailboxes.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Solomon@UWISC.ARPA
+
+   Daytime Protocol  ----------------------------------------- (DAYTIME)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 867
+
+      COMMENTS:
+
+         Provides the day and time in ASCII character string.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Network Time Protocol  ---------------------------------------- (NTP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 958
+
+      COMMENTS:
+
+         A proposed protocol for synchronizing a set of network clocks
+         using a set of distributed clients and servers.
+
+
+
+
+Reynolds & Postel                                              [Page 25]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 778, RFC 891, RFC 956, and RFC 957.
+
+      DEPENDENCIES: User Datagram Protocol
+
+      CONTACT: Mills@USC-ISID.ARPA
+
+   Time Server Protocol  ---------------------------------------- (TIME)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 868
+
+      COMMENTS:
+
+         Provides the time as the number of seconds from a specified
+         reference time.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+                    or User Datagram Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   DCNET Time Server Protocol  --------------------------------- (CLOCK)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 778
+
+      COMMENTS:
+
+         Provides a mechanism for keeping synchronized clocks.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Control Message Protocol
+
+      CONTACT: Mills@USC-ISID.ARPA
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 26]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   SUPDUP Protocol  ------------------------------------------- (SUPDUP)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 734 (in APH)
+
+      COMMENTS:
+
+         A special Telnet like protocol for display terminals.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Crispin@SU-SCORE.ARPA
+
+   Internet Message Protocol  ------------------------------------ (MPM)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 759
+
+      COMMENTS:
+
+         This is an experimental multimedia mail transfer protocol.  The
+         implementation is called a Message Processing Module or MPM.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+         RFC 767 - Structured Document Formats
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 27]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Post Office Protocol - Version 2  ---------------------------- (POP2)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 937
+
+      COMMENTS:
+
+         The intent of the Post Office Protocol - Version 2 (POP2) is to
+         allow a user's workstation to access mail from a mailbox
+         server.  It is expected that mail will be posted from the
+         workstation to the mailbox server via the Simple Mail Transfer
+         Protocol (SMTP).
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  Obsoletes RFC 918
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: JKReynolds@USC-ISIB.ARPA
+
+   Network Standard Text Editor  ------------------------------- (NETED)
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 569
+
+      COMMENTS:
+
+         Describes a simple line editor which could be provided by every
+         Internet host.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 28]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Authentication Service  -------------------------------------- (AUTH)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 931
+
+      COMMENTS:
+
+         This server provides a means to determine the identity of a
+         user of a particular TCP connection.  Given a TCP port number
+         pair, it returns a character string which identifies the owner
+         of that connection on the server's system.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  Supercedes RFC 912
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: StJohns@MIT-Multics.ARPA
+
+   Bootstrap Protocol  ----------------------------------------- (BOOTP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 951
+
+      COMMENTS:
+
+         This proposed protocol provides an IP/UDP bootstrap protocol
+         which allows a diskless client machine to discover its own IP
+         address, the address of a server host, and the name of a file
+         to be loaded into memory and executed.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Internet Protocol, User Datagram Protocol
+
+      CONTACT: Croft@SUMEX-AIM.ARPA
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 29]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+APPENDICES
+
+   Assigned Numbers  ---------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 960
+
+      COMMENTS:
+
+         Describes the fields of various protocols that are assigned
+         specific values for actual use, and lists the currently
+         assigned values.
+
+         Issued November 1985, replaces RFC 943, RFC 790 in IPTW, and
+         RFC 923.
+
+      OTHER REFERENCES:
+
+      CONTACT: JKReynolds@USC-ISIB.ARPA
+
+   Pre-emption  --------------------------------------------------------
+
+      STATUS:  Elective
+
+      SPECIFICATION:  RFC 794 (in IPTW)
+
+      COMMENTS:
+
+         Describes how to do pre-emption of TCP connections.
+
+      OTHER REFERENCES:
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 30]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Service Mappings  ---------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 795 (in IPTW)
+
+      COMMENTS:
+
+         Describes the mapping of the IP type of service field onto the
+         parameters of some specific networks.
+
+         Out of date, needs revision.
+
+      OTHER REFERENCES:
+
+      CONTACT: Postel@USC-ISIB.ARPA
+
+   Address Mappings  ---------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 796 (in IPTW)
+
+      COMMENTS:
+
+         Describes the mapping between Internet Addresses and the
+         addresses of some specific networks.
+
+         Out of date, needs revision.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   Document Formats  ---------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 678
+
+      COMMENTS:
+
+         Describes standard format rules for several types of documents.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+
+
+
+Reynolds & Postel                                              [Page 31]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Bitmap Formats  -----------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 797
+
+      COMMENTS:
+
+         Describes a standard format for bitmap data.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   Facsimile Formats  --------------------------------------------------
+
+      STATUS:  None
+
+      SPECIFICATION:  RFC 804
+
+      COMMENTS:
+
+         Describes a standard format for facsimile data.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   Host-Front End Protocol  ------------------------------------- (HFEP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 929
+
+      COMMENTS:
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 928
+
+      DEPENDENCIES:
+
+      CONTACT: Padlipsky@USC-ISI.ARPA
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 32]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Internet Protocol on X.25 Networks  ------------------------ (IP-X25)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 877
+
+      COMMENTS:
+
+         Describes a standard for the transmission of IP Datagrams over
+         Public Data Networks.
+
+      OTHER REFERENCES:
+
+      CONTACT:  jtk@PURDUE.ARPA
+
+   Internet Protocol on DC Networks  --------------------------- (IP-DC)
+
+      STATUS:  Elective
+
+      SPECIFICATION: RFC 891
+
+      COMMENTS:
+
+      OTHER REFERENCES:
+
+         RFC 778 - DCNET Internet Clock Service
+
+      CONTACT:  Mills@USC-ISID.ARPA
+
+   Internet Protocol on Ethernet Networks  ---------------------- (IP-E)
+
+      STATUS:  Recommended
+
+      SPECIFICATION: RFC 894
+
+      COMMENTS:
+
+      OTHER REFERENCES:  RFC 893
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 33]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Internet Protocol on Experimental Ethernet Networks  -------- (IP-EE)
+
+      STATUS:  Recommended
+
+      SPECIFICATION: RFC 895
+
+      COMMENTS:
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   Internet Protocol on IEEE 802.3  -------------------------- (IP-IEEE)
+
+      STATUS:  Recommended
+
+      SPECIFICATION: RFC 948
+
+      COMMENTS:  A proposed protocol of two methods of encapsulating
+      Internet Protocol (IP) datagrams on an IEEE 802.3 network.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Ira@UPENN.CSNET
+
+   Internet Subnet Protocol  ---------------------------------- (IP-SUB)
+
+      STATUS:  Recommended
+
+      SPECIFICATION: RFC 950
+
+      COMMENTS:
+
+         Specifies procedures for the use of subnets, including the
+         ultility of "subnets" of Internet networks, which are logically
+         visible sub-sections of a single Internet.  Recommended in the
+         sense of "if you do subnetting at all do it this way".
+
+      OTHER REFERENCES:  RFC 940, RFC 917, RFC 925, RFC 932, RFC 936,
+      RFC 922
+
+      DEPENDENCIES:
+
+      CONTACT:  Mogul@SU-SCORE.ARPA
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 34]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Broadcasting Internet Datagrams  ------------------------- (IP-BROAD)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 919
+
+      COMMENTS:
+
+         A proposed protocol of simple rules for broadcasting Internet
+         datagrams on local networks that support broadcast, for
+         addressing broadcasts, and for how gateways should handle them.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 922
+
+      DEPENDENCIES:
+
+      CONTACT: Mogul@SU-SCORE.ARPA
+
+   Address Resolution Protocol  ---------------------------------- (ARP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION: RFC 826
+
+      COMMENTS:
+
+         This is a procedure for finding the network hardware address
+         corresponding to an Internet Address.
+
+      OTHER REFERENCES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   A Reverse Address Resolution Protocol  ----------------------- (RARP)
+
+      STATUS:  Elective
+
+      SPECIFICATION: RFC 903
+
+      COMMENTS:
+
+         This is a procedure for workstations to dynamically find their
+         protocol address (e.g., their Internet Address), when they only
+         only know their hardware address (e.g., their attached physical
+         network address).
+
+
+
+Reynolds & Postel                                              [Page 35]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+      OTHER REFERENCES:
+
+      CONTACT:  Mogul@SU-SCORE.ARPA
+
+   Multi-LAN Address Resolution Protocol  ----------------------- (MARP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION: RFC 925
+
+      COMMENTS:
+
+         Discussion of the various problems and potential solutions of
+         "transparent subnets" in a multi-LAN environment.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:  RFC 917, RFC 826
+
+      DEPENDENCIES:
+
+      CONTACT:  Postel@USC-ISIB.ARPA
+
+   Broadcasting Internet Datagrams with Subnets --------- (IP-SUB-BROAD)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 922
+
+      COMMENTS:
+
+         A proposed protocol of simple rules for broadcasting Internet
+         datagrams on local networks that support broadcast, for
+         addressing broadcasts, and for how gateways should handle them.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:
+
+      CONTACT: Mogul@SU-SCORE.ARPA
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 36]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Host Access Protocol  ----------------------------------------- (HAP)
+
+      STATUS:  Recommended
+
+      SPECIFICATION:  RFC 907
+
+      COMMENTS:
+
+         This protocol specifies the network-access level communication
+         between an arbitrary computer, called a host, and a
+         packet-switched satellite network, e.g., SATNET or WBNET.
+
+         Note:  Implementations of HAP should be performed in
+         coordination with satellite network development and operations
+         personnel.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:
+
+      CONTACT: Schoen@BBN-UNIX.ARPA
+
+   Reliable Asynchronous Transfer Protocol  --------------------- (RATP)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 916
+
+      COMMENTS:
+
+         This paper specifies a protocol which allows two programs to
+         reliably communicate over a communication link.  It ensures
+         that the data entering one end of the link if received arrives
+         at the other end intact and unaltered.  This proposed protocol
+         is designed to operate over a full duplex point-to-point
+         connection.  It contains some features which tailor it to the
+         RS-232 links now in current use.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES: Transmission Control Protocol
+
+      CONTACT: Finn@USC-ISIB.ARPA
+
+
+
+
+
+Reynolds & Postel                                              [Page 37]
+
+
+
+Official ARPA-Internet Protocols                                 RFC 961
+
+
+   Thinwire Protocol  --------------------------------------- (THINWIRE)
+
+      STATUS:  Experimental
+
+      SPECIFICATION:  RFC 914
+
+      COMMENTS:
+
+         This paper discusses a Thinwire Protocol for connecting
+         personal computers to the ARPA-Internet.  It primarily focuses
+         on the particular problems in the ARPA-Internet of low speed
+         network interconnection with personal computers, and possible
+         methods of solution.
+
+         Please discuss any plans for implementation or use of this
+         protocol with the contact.
+
+      OTHER REFERENCES:
+
+      DEPENDENCIES:
+
+      CONTACT: Farber@ROCHESTER.ARPA
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Reynolds & Postel                                              [Page 38]
+