[1726] in Commercialization & Privatization of the Internet
Re: An interesting question from can.canet.d
daemon@ATHENA.MIT.EDU (jeff@nsipo.nasa.gov)
Mon Dec 16 04:12:35 1991
To: moraes@cs.toronto.edu (Mark Moraes)
Cc: com-priv@psi.com
In-Reply-To: Your message of "Mon, 16 Dec 91 03:33:21 EST."
Date: Mon, 16 Dec 91 01:11:16 -0800
From: jeff@nsipo.nasa.gov
Mark,
Well, there is work currently going on to define a new router
requirements document. The current work is being done inside the
IETF. The document difines a new ICMP message for this purpose.
Below is part of the text. I don't believe the number is official
yet but someone will correct me if I'm wrong.
Jeff
46 The following additional codes are hereby defined:
47 13 = communication administratively prohibited - generated
48 if a router cannot forward a packet due to
49 administrative filtering.
63 administratively prohibited and code 10 for communication
64 with destination host administratively prohibited. These
65 codes were intended for use by end-to-end encryption devices
66 used by U.S military agencies. Routers SHOULD use the newly
67 defined code 13 if they administratively filter packets.
68 Routers MAY have a configuration option that causes code 13
69 messages not to be generated. When this option is enabled,
70 no ICMP error message is sent in response to a packet which
71 is dropped because its forwarding is administratively
72 prohibited.
77 EDITOR'S COMMENTS:
78 Codes 13, 14, and 15 are not yet official; I need to
79 request official assignment from the IANA.
