From owner-freebsd-net@freebsd.org Fri Aug 17 23:33:32 2018 Return-Path: Delivered-To: freebsd-net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id EF4BB107E7DB for ; Fri, 17 Aug 2018 23:33:31 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mailman.ysv.freebsd.org (mailman.ysv.freebsd.org [IPv6:2001:1900:2254:206a::50:5]) by mx1.freebsd.org (Postfix) with ESMTP id 87CAF77485 for ; Fri, 17 Aug 2018 23:33:31 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: by mailman.ysv.freebsd.org (Postfix) id 48AA9107E7DA; Fri, 17 Aug 2018 23:33:31 +0000 (UTC) Delivered-To: net@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id 26A90107E7D9 for ; Fri, 17 Aug 2018 23:33:31 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: from mail-oi0-x22d.google.com (mail-oi0-x22d.google.com [IPv6:2607:f8b0:4003:c06::22d]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id AC46377484 for ; Fri, 17 Aug 2018 23:33:30 +0000 (UTC) (envelope-from kob6558@gmail.com) Received: by mail-oi0-x22d.google.com with SMTP id q11-v6so16740472oic.12 for ; Fri, 17 Aug 2018 16:33:30 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=uiHxGsKzQWba70NFhVSkGDOaBgmxcn+NQ6z7LpG+AIU=; b=nz05vW57NvQiXrQBDucqbV6Gvx/+uvDQLnuj9iKejoRALbbfkLqUooAgYYdt0nYS30 Z2u1e8tiQKFRY0QorOJdv7P1NTfElLBcnlHyUtsq1qklecVT1ftC+K+Q3qj8mXaOSNM7 qgqeR6XN/fY03PqEdIauyoAy+hj15YHtZNJ+xCqx2+1TwM2bPYGIvhvmNr3LlcU9v37K UWcE+bEHwV3tJeFuLyPry0pjmAk4zzpMjMYaMwTXXq4YNHJ2NRbESad8D7bNfWk/hDoo V5tS6+v70c5+D83ZfPV/z9gJGMJ0BcrELc1W8PQ694hj535AVIDV9qKtC0hRlzkGMcvY Z1Wg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=uiHxGsKzQWba70NFhVSkGDOaBgmxcn+NQ6z7LpG+AIU=; b=UQGuDNeOSVhVjHted8SOfPMCSAKgtZFm5NYHsluuR5Mfmc4X76NsyqllwSmNdQ08UQ Tf0Y3g1hjkdQhehEuxpWX/ZCUByuMPNsrwjeERR1qM99NSY96iPaWly+vRJlrX2KkU/8 c7t2ki3NHMlDgOD3LuPUVM8jkexFvXWV5jTCj5O0YqJrtT17J4ZYc6mBjE410+9lEkSL AiCoQsvwz9sG4VDCPWbuE4mgRXyYwG+4Ugi6bQMLkWs/TEs8RsBCE6LZzMxU/iAb3VhS 8SjYI/8vgr/gYZRFXiYWQMtsc2dapu/kk8f5E47RAAmGmB2KVZvrcmkYMtarneSRQxoU /Ueg== X-Gm-Message-State: AOUpUlFkBakTMTNOIklpLhWnDPdsyNCp5szzHLJ+nA6R6/NE55LpJd+Q oll5W0PIKViFRwGT2vGuafEe8G60cpIpuEKb2c/GmyCt X-Google-Smtp-Source: AA+uWPxhJU+e7V72ZOLKS9pUuJ9M9I7BakDEXaaZQQzYWrnTr5SjOUeMDP57s4bV8OyhpEMCuKK8rhzacm++GO6ep4I= X-Received: by 2002:aca:f0d4:: with SMTP id o203-v6mr4357681oih.21.1534548809659; Fri, 17 Aug 2018 16:33:29 -0700 (PDT) MIME-Version: 1.0 From: Kevin Oberman Date: Fri, 17 Aug 2018 16:33:12 -0700 Message-ID: Subject: Very frequent "log_in_vain" messages To: FreeBSD Net Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.27 X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.27 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 17 Aug 2018 23:33:32 -0000 On any given day I log betwen 30 and several hundred messages similar to this: TCP: [137.200.39.19]:443 to [192.168.1.5]:39576 tcpflags 0x12; tcp_input: Connection attempt to closed port The remote port is always 80 or 443. They usually show up in bursts of over a dozen, probably re-transmits. They come feom a variety of sources; in this case the Social Security Administration, with which I have been in contact. I am running 11-Stable and started getting these several months ago. I neglected to note just when, but probably after 11.1-RELEASE, but well before 11.2-RELEASE. This may be FreeBSD, but it may also be tied to Firefox. Is anyone else seeing this? I'm not sure how common it is to run log_in_vain, so it may be common, but little noticed. Thanks for any clues about this. -- Kevin Oberman, Part time kid herder and retired Network Engineer E-mail: rkoberman@gmail.com PGP Fingerprint: D03FB98AFA78E3B78C1694B318AB39EF1B055683