CURRENT_MEETING_REPORT_ Reported by Steve Alexander/Lachman Technology Minutes of the TELNET Working Group (TELNET) The Telnet Working Group met in two sessions on Tuesday, March 30, 1993. In the morning the Group first discussed the Environment Specification, RFC1408. This document contains an error in two sub-option values. It appears that more implementations do what the BSD/Cray implementation does than actually follow RFC1408. The Group agreed to update RFC1408 with the correct values and some text discussing interoperability. Steve Alexander will update the document and send it out for review. The Working Group then discussed the latest draft of the Kerberos V authentication mechanism. This has been updated with support for delegation of credentials. Ted Ts'o from MIT indicated that this had been implemented and works. Ted also mentioned that the general authentication option needs a way to indicate that credentials will be delegated. The Group agreed to this. With support in the general mechanism, some changes will be needed to the Kerberos V mechanism document as well. The next topic was Dave Borman's new merged authentication/encryption document. The document was only briefly discussed since the most recent version came out the Friday before the meeting. It was agreed that Steve Bellovin's suggestion that the document explain why encryption cannot be turned on once it has been turned off should be adopted. This recommendation and the credential delegation suggestion will be forwarded to Dave. Jeff Schiller recommended that the Working Group Chair be more zealous in getting new drafts out as Internet-Drafts. There was general agreement on this point. The Group spent the remainder of the morning discussing the HP proposal for Telnet multiplexing (Telnet MPX). It was generally agreed that HP's performance numbers were very impressive, but the consensus was that Telnet was not the best place to implement this. The Group recommended that a general solution, possibly at the transport or network layers would be a better approach. It was also recommended that HP move the multiplexing mechanism to a TCP port other than 23 for experimentation, and that the revised document be issued as an Experimental RFC. There was also a brief discussion on enhancements to the MPX packet format. The evening session was devoted to a discussion of Telnet 3270 emulation (TN 3270). Robert Moskowitz from Chrysler gave a synopsis of defects in the current TN3270 implementations. There was general agreement on these problems and the proposed solutions. In discussion with Russ Hobby, it was decided that TN3270 was somewhat tangential to the issues that the Telnet Working Group is pursuing. TN3270 implementors and users will form their own working group in the Applications Area. TN3270 will remain a telnet-based service so that features like 1 Authentication and the Environment Option can be utilized if desired. Attendees Steve Alexander stevea@lachman.com Jim Barnes barnes@xylogics.com Fred Bohle fab@interlink.com Larry Campbell larry@psycho.psy.ohio-state.edu Roger Fajman raf@cu.nih.gov Antonio Fernandez afa@thumper.bellcore.com Eric Fleischman ericf@act.boeing.com Jisoo Geiter geiter@mitre.org Richard Graveman rfg@ctt.bellcore.com Cleve Graves cvgpc@oc.com Jeff Hilgeman jeffh@apertus.com Russ Hobby rdhobby@ucdavis.edu Scott Kaplan scott@wco.ftp.com Frank Kastenholz kasten@ftp.com Charles Kaufman kaufman@zk3.dec.com Bill Kelly kellywh@mail.auburn.edu Zbigniew Kielczewski zbig@eicon.qc.ca William Kwan kwan@rabbit.com John Linn linn@gza.com Kent Malave kent@bach.austin.ibm.com Marjo Mercado marjo@cup.hp.com Greg Minshall minshall@wc.novell.com Robert Moskowitz 3858921@mcimail.com Baktha Muralidharan murali@smaug.enet.dec.com Clifford Neuman bcn@isi.edu Jon Penner jjp@bscs.uucp Christopher Provenzano proven@csi.compuserve.com Marcus Ranum mjr@tis.com Owen Reddecliffe owen%wrq@mcimail.com Steven Richardson sjr@merit.edu Rick Royston rick@lsumvs.sncc.lsu.edu Jeffrey Schiller jis@mit.edu Kitty Shih kmshih@novell.com Mark Silverman mark@dss.com Sam Sjogren sjogren@tgv.com Barbara Sterling bjs@mcdata.com Theodore Ts'o tytso@mit.edu Richard Warwick richard@dss.com 2