From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on inbox.vuxu.org X-Spam-Level: X-Spam-Status: No, score=-0.6 required=5.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI autolearn=ham autolearn_force=no version=3.4.4 Received: from minnie.tuhs.org (minnie.tuhs.org [50.116.15.146]) by inbox.vuxu.org (Postfix) with ESMTP id CE49E20DD2 for ; Mon, 20 May 2024 22:02:43 +0200 (CEST) Received: from minnie.tuhs.org (localhost [IPv6:::1]) by minnie.tuhs.org (Postfix) with ESMTP id 3AFD943B52; Tue, 21 May 2024 06:02:38 +1000 (AEST) Received: from gal.iecc.com (gal.iecc.com [IPv6:2001:470:1f07:1126:0:43:6f73:7461]) by minnie.tuhs.org (Postfix) with ESMTPS id 9F37E43B4F for ; Tue, 21 May 2024 06:02:28 +1000 (AEST) Received: (qmail 5128 invoked from network); 20 May 2024 20:02:27 -0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=iecc.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=1403664bac53.k2405; bh=LwKqhxP0CCKz9JU2YO82mIkNPPOBceXgICgJaYEQ9Pg=; b=S34UrHvY3/G6FxWabLKhuCanDEERQcXXcxsiF3sSAy53IKKxAq3sy2/m/OTXw46W/1j2fVS0emL02SOy25YrWYgJo91dLQCW5jvoH4D0ewlluLRg0cWFtzPM2gU4ACwbgmiq8sk/iEELy0JT9rc/kMiQDJFgpFU6Sg0He5SO0GVfD7NivMebs2w+uD/teaabUJuGqAhZXher118HOaT6HHRdWf1Dyj9AyWjPAJJsM7eep3RIGpPYuTYA5L1aSzo9m/5DfqGfOANXL/QUhXP7bBqYkiJb79wEh1mRBTSLQNCI2NZwBNOA3Ob2TLG/jo6g8TrYfEIzvOGHMjKMcLMj5A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed; d=taugh.com; h=date:message-id:from:to:cc:subject:in-reply-to:mime-version:content-type:content-transfer-encoding:cleverness; s=1403664bac53.k2405; bh=LwKqhxP0CCKz9JU2YO82mIkNPPOBceXgICgJaYEQ9Pg=; b=Pj0hkYgd58isMJDwjWga+oMCX+/KXKiAYFJGPZhHnkCAjUk5zOhMzz4zWV+d4d2NdPhdLGUh/e+YEoo8jsRVinHWWUBG95N8D5To5pU3Ap2qRS46Om41+htNUuYXoBfcpj10josw9T+iZc/8NrVCanq1n9w2m1UBJYWlCqmbf64K9rPy1YACb0AFaREf6dfxCq0YpuFh6lhOoj2F+/D1+Q6LEDdmOf2a+7zpD0a1ypTHjYG8rbtEbTmSBvwEXdWxQUuV6iingVe48LkKPNY4r4W11fu+80TFghul6VMef67QOzddpRL6YrhxH9dTa0JSfLuGgw9i9wvLplKOjU2Ozw== Received: from ary.qy ([IPv6:2001:470:1f07:1126::78:696d:6170]) by imap.iecc.com ([IPv6:2001:470:1f07:1126::78:696d:6170]) with ESMTPS (TLS1.3 ECDHE-RSA CHACHA20-POLY1305 AEAD) via TCP6; 20 May 2024 20:02:26 -0000 Received: by ary.qy (Postfix, from userid 501) id 80F428B9493A; Mon, 20 May 2024 16:02:26 -0400 (EDT) Date: 20 May 2024 16:02:26 -0400 Message-Id: <20240520200226.80F428B9493A@ary.qy> From: "John Levine" To: tuhs@tuhs.org In-Reply-To: Organization: Taughannock Networks X-Headerized: yes Cleverness: minimal Mime-Version: 1.0 Content-type: text/plain; charset=utf-8 Content-transfer-encoding: 8bit Message-ID-Hash: MJHSNG2RT7NLLXCY72TUKNEIUC7IDPVP X-Message-ID-Hash: MJHSNG2RT7NLLXCY72TUKNEIUC7IDPVP X-MailFrom: johnl@iecc.com X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: benjamin.p.kallus.gr@dartmouth.edu X-Mailman-Version: 3.3.6b1 Precedence: list Subject: [TUHS] Re: OT: LangSec (Re: A fuzzy awk.) List-Id: The Unix Heritage Society mailing list Archived-At: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: It appears that Ben Kallus said: >> It may become hard to reconcile this with the robustness principle >> (Be conservative in what you send, be liberal in what you accept) >> that Jon Postel popularized. Maybe it becomes necessary, though. > >Yes; the LangSec people essentially reject the robustness principle. > >See https://langsec.org/papers/postel-patch.pdf On the contrary, they actually understand it. Postel was widely misunderstood to say that you should try to accept arbitrary garbage. People who knew him tell me that he meant to be liberal when the spec is ambiguous, not to allow stuff that is just wrong. As their quote from RFC 1122 points out, he also said you should be prepared for arbitrary garbage so you can reject it. R's, John