The "KA9Q NOS" networking package is copyright 1992 by Phil Karn, KA9Q. All rights reserved. Permission is hereby granted for the free copying and use of this package by radio amateurs and non-profit educational institutions. I.e., to hams and schools, it is "freeware". Use of this software by commercial or governmental organizations is on a "shareware" -- not freeware -- basis. That is, a prospective commercial or governmental user may copy and evaluate the software for his or her application. If it is to be used beyond evaluation purposes, it must be registered for $50/copy (see address below). The right conferred by the registration fee to use the software in a commercial or government organization is limited to those portions of the NOS package that are the sole work of Phil Karn, KA9Q. Certain portions of the package, in particular the email subsystem, were contributed by others with the understanding that they would be used for amateur radio and educational purposes only. Any commercial or governmental use of these portions requires an agreement with the appropriate author(s). Each source code file includes an appropriate authorship and copyright statement. In several cases, the contributing authors have placed their code into the public domain. This is the case with the PPP and VJ header compression code contributed by Katie Stevens and Bill Simpson. This code may be freely used by anyone. Again, see the comments in the various source files for details. NOS is provided without warranty of any kind. The prospective user is responsible for testing and evaluating it to see if it meets his or her needs. The payment of the registration fee merely grants the user the right to use the software as-is; it does not obligate me to provide any assistance or support. OEM licenses for the inclusion of part or all of the Karn-authored portions of NOS into commercial networking software products are available on an individually negotiated basis. Discounted site licenses (e.g., for large-scale internal use) are also available. Please contact: Phil Karn, KA9Q 7431 Teasdale Ave San Diego, CA 92122 voice: 619-587-8281 fax: 619-587-1825