|   | 
| RFC 600  | Interfacing an Illinois plasma terminal to the ARPANET | 
|   | 
 | 
|   | 
| RFC 601  | Traffic statistics (November 1973) | 
|   | 
| Authors: | A.M. McKenzie. |  
| Date: | December 1973 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0601 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 602  | "The stockings were hung by the chimney with care" | 
|   | 
| Authors: | R.M. Metcalfe. |  
| Date: | December 1973 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0602 |  
 
 | 
Susceptibility of ARPANET to security violations. |  
 
 | 
|   | 
| RFC 603  | Response to RFC 597: Host status | 
|   | 
| 
 | 
Questions about the ARPANET topology described in RFC 597. |  
 
 | 
|   | 
| RFC 604  | Assigned link numbers | 
|   | 
| 
 | 
Modifies official host-host protocol. Replaces RFC 377. |  
 
 | 
|   | 
| RFC 606  | Host names on-line | 
|   | 
| Authors: | L.P. Deutsch. |  
| Date: | December 1973 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0606 |  
 
 | 
Resolving differences in hostname-address mappings; see also RFCs 627, 625, 623 and 608. |  
 
 | 
|   | 
| RFC 607  | Comments on the File Transfer Protocol | 
|   | 
| 
 | 
An old version; see RFC 624; see also RFCs 614, 542 and 640. |  
 
 | 
|   | 
| RFC 608  | Host names on-line | 
|   | 
| 
 | 
Response to RFC 606; see also RFCs 627, 625 and 623. |  
 
 | 
|   | 
| RFC 609  | Statement of upcoming move of NIC/NLS service | 
|   | 
| Authors: | B. Ferguson. |  
| Date: | January 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0609 |  
 
 | 
See also RFCs 621 and 620. |  
 
 | 
|   | 
| RFC 610  | Further datalanguage design concepts | 
|   | 
| Authors: | R. Winter, J. Hill, W. Greiff. |  
| Date: | December 1973 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0610 |  
 
 | 
Preliminary results of the language design; a model for data languagea semantics; future considerations. |  
 
 | 
|   | 
| RFC 611  | Two changes to the IMP/Host Protocol to improve user/network communications | 
|   | 
| Authors: | D.C. Walden. |  
| Date: | February 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0611 |  
 
 | 
Expansion of Host-Going-Down and addition of Dead-Host-Status Message. |  
 
 | 
|   | 
| RFC 612  | Traffic statistics (December 1973) | 
|   | 
| Authors: | A.M. McKenzie. |  
| Date: | January 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0612 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 613  | Network connectivity: A response to RFC 603 | 
|   | 
 | 
|   | 
| RFC 614  | Response to RFC 607: "Comments on the File Transfer Protocol" | 
|   | 
| 
 | 
See also RFCs 624, 542 and 640. |  
 
 | 
|   | 
| RFC 615  | Proposed Network Standard Data Pathname syntax | 
|   | 
 | 
|   | 
| RFC 616  | LATEST NETWORK MAPS | 
|   | 
 | 
|   | 
| RFC 617  | Note on socket number assignment | 
|   | 
| Authors: | E.A. Taft. |  
| Date: | February 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0617 |  
 
 | 
Danger of imposing more fixed socket number requirements; see also RFCs 542, 503 and 451. |  
 
 | 
|   | 
| RFC 618  | Few observations on NCP statistics | 
|   | 
| Authors: | E.A. Taft. |  
| Date: | February 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0618 |  
 
 | 
Distribution of NCP and IMP message types by actual measurement. |  
 
 | 
|   | 
| RFC 619  | Mean round-trip times in the ARPANET | 
|   | 
| Authors: | W. Naylor, H. Opderbeck. |  
| Date: | March 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0619 |  
 
 | 
Actual measurements of round-trip times. |  
 
 | 
|   | 
| RFC 620  | Request for monitor host table updates | 
|   | 
| Authors: | B. Ferguson. |  
| Date: | March 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0620 |  
 
 | 
In conjunction with moving NIC users to OFFICE-1; see also RFCs 621 and 609. |  
 
 | 
|   | 
| RFC 621  | NIC user directories at SRI ARC | 
|   | 
| Authors: | M.D. Kudlick. |  
| Date: | March 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0621 |  
 
 | 
See also RFCs 620 and 609. |  
 
 | 
|   | 
| RFC 622  | Scheduling IMP/TIP down time | 
|   | 
| Authors: | A.M. McKenzie. |  
| Date: | March 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0622 |  
 
 | 
Modification of previous policy. |  
 
 | 
|   | 
| RFC 623  | Comments on on-line host name service | 
|   | 
| Authors: | M. Krilanovich. |  
| Date: | February 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0623 |  
 
 | 
See also RFCs 627, 625, 608 and 606. |  
 
 | 
|   | 
| RFC 624  | Comments on the File Transfer Protocol | 
|   | 
| Authors: | M. Krilanovich, G. Gregg, W. Hathaway, J.E. White. |  
| Date: | February 1974 |  
| Formats: | txt html json  |  
| Obsoletes: | RFC 0607 |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0624 |  
 
 | 
Design changes and slight modifications. Replaces RFC 607; see also RFCs 614, 542 and 640. |  
 
 | 
|   | 
| RFC 625  | On-line hostnames service | 
|   | 
| Authors: | M.D. Kudlick, E.J. Feinler. |  
| Date: | March 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0625 |  
 
 | 
See also RFCs 606, 608, 623 and 627. |  
 
 | 
|   | 
| RFC 626  | On a possible lockup condition in IMP subnet due to message sequencing | 
|   | 
| Authors: | L. Kleinrock, H. Opderbeck. |  
| Date: | March 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0626 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 627  | ASCII text file of hostnames | 
|   | 
| Authors: | M.D. Kudlick, E.J. Feinler. |  
| Date: | March 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0627 |  
 
 | 
See also RFCs 606, 608, 623 and 625. |  
 
 | 
|   | 
| RFC 628  | Status of RFC numbers and a note on pre-assigned journal numbers | 
|   | 
| Authors: | M.L. Keeney. |  
| Date: | March 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0628 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 629  | Scenario for using the Network Journal | 
|   | 
 | 
|   | 
| RFC 630  | FTP error code usage for more reliable mail service | 
|   | 
| 
 | 
Describes FTP reply-code usage in TENEX mail processing. |  
 
 | 
|   | 
| RFC 631  | International meeting on minicomputers and data communication: Call for papers | 
|   | 
| Authors: | A. Danthine. |  
| Date: | April 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0631 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 632  | Throughput degradations for single packet messages | 
|   | 
 | 
|   | 
| RFC 633  | IMP/TIP preventive maintenance schedule | 
|   | 
| 
 | 
An old version; see RFC 638. |  
 
 | 
|   | 
| RFC 634  | Change in network address for Haskins Lab | 
|   | 
| Authors: | A.M. McKenzie. |  
| Date: | April 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0634 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 635  | Assessment of ARPANET protocols | 
|   | 
 | 
|   | 
| RFC 636  | TIP/Tenex reliability improvements | 
|   | 
| Authors: | J.D. Burchfiel, B. Cosell, R.S. Tomlinson, D.C. Walden. |  
| Date: | June 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0636 |  
 
 | 
Obtaining/maintaining connections; recovery from lost connections; connection-state changes. |  
 
 | 
|   | 
| RFC 637  | Change of network address for SU-DSL | 
|   | 
| Authors: | A.M. McKenzie. |  
| Date: | April 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0637 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 638  | IMP/TIP preventive maintenance schedule | 
|   | 
 | 
|   | 
| RFC 640  | Revised FTP reply codes | 
|   | 
 | 
|   | 
| RFC 642  | Ready line philosophy and implementation | 
|   | 
| Authors: | J.D. Burchfiel. |  
| Date: | July 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0642 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 643  | Network Debugging Protocol | 
|   | 
| 
 | 
To be used in an implementation of a PDP-11 network bootstrap device and a cross-network debugger. |  
 
 | 
|   | 
| RFC 644  | On the problem of signature authentication for network mail | 
|   | 
 | 
|   | 
| RFC 645  | Network Standard Data Specification syntax | 
|   | 
 | 
|   | 
| RFC 647  | Proposed protocol for connecting host computers to ARPA-like networks via front end processors | 
|   | 
 | 
|   | 
| RFC 651  | Revised Telnet status option | 
|   | 
 | 
|   | 
| RFC 652  | Telnet output carriage-return disposition option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt html json  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0652 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 653  | Telnet output horizontal tabstops option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt html json  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0653 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 654  | Telnet output horizontal tab disposition option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt json html  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0654 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 655  | Telnet output formfeed disposition option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt json html  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0655 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 656  | Telnet output vertical tabstops option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt html json  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0656 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 657  | Telnet output vertical tab disposition option | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt html json  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0657 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 658  | Telnet output linefeed disposition | 
|   | 
| Authors: | D. Crocker. |  
| Date: | October 1974 |  
| Formats: | txt json html  |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0658 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 659  | Announcing additional Telnet options | 
|   | 
| Authors: | J. Postel. |  
| Date: | October 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0659 |  
 
 | 
Options defined in RFCs 651-658. |  
 
 | 
|   | 
| RFC 660  | Some changes to the IMP and the IMP/Host interface | 
|   | 
| Authors: | D.C. Walden. |  
| Date: | October 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0660 |  
 
 | 
Decoupling of message number sequences of hosts; host-host access control; message number window; messages outside normal mechanism; see also BBN 1822. |  
 
 | 
|   | 
| RFC 661  | Protocol information | 
|   | 
 | 
|   | 
| RFC 662  | Performance improvement in ARPANET file transfers from Multics | 
|   | 
| Authors: | R. Kanodia. |  
| Date: | November 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0662 |  
 
 | 
Experimenting with host output buffers to improve throughput. |  
 
 | 
|   | 
| RFC 663  | Lost message detection and recovery protocol | 
|   | 
| Authors: | R. Kanodia. |  
| Date: | November 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0663 |  
 
 | 
Proposed extension of host-host protocol; see also RFCs 534, 516, 512, 492 and 467. |  
 
 | 
|   | 
| RFC 666  | Specification of the Unified User-Level Protocol | 
|   | 
| Authors: | M.A. Padlipsky. |  
| Date: | November 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0666 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 667  | Host Ports | 
|   | 
 | 
|   | 
| RFC 669  | November, 1974, survey of New-Protocol Telnet servers | 
|   | 
| 
 | 
An earlier poll of Telnet server implementation status. Updates RFC 702; see also RFCs 703 and 679. |  
 
 | 
|   | 
| RFC 671  | Note on Reconnection Protocol | 
|   | 
 | 
|   | 
| RFC 672  | Multi-site data collection facility | 
|   | 
| Authors: | R. Schantz. |  
| Date: | December 1974 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0672 |  
 
 | 
Applicability of TIP/TENEX protocols beyond TIP accounting. |  
 
 | 
|   | 
| RFC 674  | Procedure call documents: Version 2 | 
|   | 
| Authors: | J. Postel, J.E. White. |  
| Date: | December 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0674 |  
 
 | 
Host level protocol used in the NSW--a slightly constrained version of ARPANET Host-to-Host protocol, affecting allocation, RFNM wait, and retransmission; see also RFC 684. |  
 
 | 
|   | 
| RFC 675  | Specification of Internet Transmission Control Program | 
|   | 
| Authors: | V. Cerf, Y. Dalal, C. Sunshine. |  
| Date: | December 1974 |  
| Formats: | txt json html  |  
| Obsoleted by: | RFC 7805 |  
| Status: | HISTORIC |  
| DOI: | 10.17487/RFC 0675 |  
 
 | 
The first detailed specification of TCP; see RFC 793. |  
 
 | 
|   | 
| RFC 677  | Maintenance of duplicate databases | 
|   | 
| Authors: | P.R. Johnson, R. Thomas. |  
| Date: | January 1975 |  
| Formats: | txt html json  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0677 |  
 
 | 
  |  
 
 | 
|   | 
| RFC 678  | Standard file formats | 
|   | 
| Authors: | J. Postel. |  
| Date: | December 1974 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0678 |  
 
 | 
For transmission of documents across different environments. |  
 
 | 
|   | 
| RFC 679  | February, 1975, survey of New-Protocol Telnet servers | 
|   | 
 | 
|   | 
| RFC 680  | Message Transmission Protocol | 
|   | 
 | 
|   | 
| RFC 681  | Network UNIX | 
|   | 
| Authors: | S. Holmgren. |  
| Date: | March 1975 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0681 |  
 
 | 
Capabilities as an ARPANET Mini-Host: standard I/O, Telnet, NCP, Hardware/Software requirements, reliability, availability. |  
 
 | 
|   | 
| RFC 683  | FTPSRV - Tenex extension for paged files | 
|   | 
| 
 | 
Defines an extension to FTP for page-mode transfers between TENEX systems; also discusses file transfer reliability. |  
 
 | 
|   | 
| RFC 684  | Commentary on procedure calling as a network protocol | 
|   | 
| 
 | 
Issues in designing distributed computing systems. Shortcomings of RFC 674; see also RFCs 542 and 354. |  
 
 | 
|   | 
| RFC 685  | Response time in cross network debugging | 
|   | 
| 
 | 
The contribution of ARPANET communication to response time. |  
 
 | 
|   | 
| RFC 686  | Leaving well enough alone | 
|   | 
| 
 | 
Discusses difference between early and later versions of FTP; see also RFCs 691, 640, 630, 542, 454, 448, 414, 385 and 354. |  
 
 | 
|   | 
| RFC 687  | IMP/Host and Host/IMP Protocol changes | 
|   | 
| 
 | 
Addressing hosts on more than 63 IMPs, and other backwards compatible expansions; see also RFCs 690 and 692. |  
 
 | 
|   | 
| RFC 688  | Tentative schedule for the new Telnet implementation for the TIP | 
|   | 
 | 
|   | 
| RFC 689  | Tenex NCP finite state machine for connections | 
|   | 
| 
 | 
Describes the internal states of an NCP connection in the TENEX implementation. |  
 
 | 
|   | 
| RFC 690  | Comments on the proposed Host/IMP Protocol changes | 
|   | 
| 
 | 
Comments on suggestions in RFC 687; see also RFCs 692 and 696. |  
 
 | 
|   | 
| RFC 691  | One more try on the FTP | 
|   | 
| 
 | 
Slight revision of RFC 686, on the subject of print files; see also RFCs 640, 630, 542, 454, 448, 414, 385 and 354. |  
 
 | 
|   | 
| RFC 692  | Comments on IMP/Host Protocol changes (RFCs 687 and 690) | 
|   | 
| 
 | 
A proposed solution to the problem of combined length of IMP and Host leaders; see also RFCs 696, 690 and 687. |  
 
 | 
|   | 
| RFC 694  | Protocol information | 
|   | 
 | 
|   | 
| RFC 695  | Official change in Host-Host Protocol | 
|   | 
| Authors: | M. Krilanovich. |  
| Date: | July 1975 |  
| Formats: | txt json html  |  
| Status: | UNKNOWN |  
| DOI: | 10.17487/RFC 0695 |  
 
 | 
Corrects ambiguity concerning the ERR command; changes NIC 8246 and NIC 7104. |  
 
 | 
|   | 
| RFC 696  | Comments on the IMP/Host and Host/IMP Protocol changes | 
|   | 
 | 
|   | 
| RFC 697  | CWD command of FTP | 
|   | 
| 
 | 
Discusses FTP login access to "files only" directories. |  
 
 | 
|   | 
| RFC 698  | Telnet extended ASCII option | 
|   | 
| 
 | 
Describes an option to allow transmission of a special kind of extended ASCII used at the Stanford AI and MIT AI Labs. |  
 
 | 
|   | 
| RFC 699  | Request For Comments summary notes: 600-699 | 
|   | 
| Authors: | J. Postel, J. Vernon. |  
| Date: | November 1982 |  
| Formats: | txt json html  |  
| Status: | INFORMATIONAL |  
| DOI: | 10.17487/RFC 0699 |  
 
 | 
  |  
 
 |