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TELNET KERMIT OPTION (RFC2840)

IP.com Disclosure Number: IPCOM000003439D
Original Publication Date: 2000-May-01
Included in the Prior Art Database: 2019-Feb-13
Document File: 12 page(s) / 14K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

J. Altman: AUTHOR [+1]

Related Documents

10.17487/RFC2840: DOI

Abstract

This document describes an extension to the Telnet protocol to allow the negotiation, coordination, and use of the Kermit file transfer and management protocol over an existing Telnet protocol connection. This memo provides information for the Internet community.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 15% of the total text.

Network Working Group J. Altman Request for Comments: 2840 F. da Cruz Category: Informational Columbia University May 2000

TELNET KERMIT OPTION

Status of this Memo

This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (2000). All Rights Reserved.

The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.

ABSTRACT

This document describes an extension to the Telnet protocol to allow the negotiation, coordination, and use of the Kermit file transfer and management protocol over an existing Telnet protocol connection.

CONTENTS

1. MOTIVATION . . . . . . . . . . . . . . . . . . . . . . . . 2 2. DEFINITIONS. . . . . . . . . . . . . . . . . . . . . . . . 2 3. COMMANDS AND CODES . . . . . . . . . . . . . . . . . . . . 3 4. COMMAND MEANINGS . . . . . . . . . . . . . . . . . . . . . 3 5. KERMIT PROTOCOL IMPLICATIONS . . . . . . . . . . . . . . . 5 6. EXAMPLES . . . . . . . . . . . . . . . . . . . . . . . . . 6 6.1. EXAMPLE 1. . . . . . . . . . . . . . . . . . . . . . . . 6 6.2. EXAMPLE 2. . . . . . . . . . . . . . . . . . . . . . . . 7 6.3. EXAMPLE 3. . . . . . . . . . . . . . . . . . . . . . . . 8 6.4. EXAMPLE 4. . . . . . . . . . . . . . . . . . . . . . . . 9 6.5. EXAMPLE 5. . . . . . . . . . . . . . . . . . . . . . . . 10 7. SECURITY CONSIDERATIONS. . . . . . . . . . . . . . . . . . 11 8. REFERENCES . . . . . . . . . . . . . . . . . . . . . . . . 11 9. AUTHORS’ ADDRESSES . . . . . . . . . . . . . . . . . . . . 11 10. FULL COPYRIGHT STATEMENT. . . . . . . . . . . . . . . . . 12

Altman & da Cruz Informational [Page 1]

RFC 2840 TELNET KERMIT OPTION May 2000

1. MOTIVATION

The Kermit protocol [KER] performs error-corrected file transfer and management over many types of connections, including terminal connections, among diverse hardware and software platforms. It is supported by a large number of Telnet clients and is also widely available on the Internet hosts to which Telnet connections are made.

Traditionally, the Kermit protocol connection is started manually by a user, or perhaps by an automated script. It is the user’s responsibility to start the Kermit server on one end of the connection and the Kermit client on the other, or to start a Kermit "send" operation on one end and a Kermit "receive" on the other.

This procedure grew out of necessity on ordinary direct-dial connections, and serves its purpose within the limitations of that context. But it introduces timing and dexterity problems, and lacks an effective way for each Kermit program to determine the "mode" of the other, or even its very presence, and therefore to know with certainty which operations and procedures are legal on the connection at any given time.

When Kermit services are offered on the Internet, h...

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