From owner-freebsd-net Tue Aug 18 01:58:51 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA20848 for freebsd-net-outgoing; Tue, 18 Aug 1998 01:58:51 -0700 (PDT) (envelope-from owner-freebsd-net@FreeBSD.ORG) Received: from chappe.cnes.fr (chappe.cnes.fr [132.149.22.2]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id BAA20809; Tue, 18 Aug 1998 01:58:44 -0700 (PDT) (envelope-from kevin.choi@cnes.fr) Received: from pasteur.cst.cnes.fr (pasteur.cnes.fr [132.149.22.8]) by chappe.cnes.fr (8.8.8/8.8.8) with ESMTP id KAA11204; Tue, 18 Aug 1998 10:57:55 +0200 (MET DST) Received: from imhotep.cst.cnes.fr (unverified) by pasteur.cst.cnes.fr (Content Technologies SMTPRS 2.0.15) with SMTP id ; Tue, 18 Aug 1998 10:58:46 +0200 Received: from pc-kichoi (pc-kichoi.cst.cnes.fr [132.149.9.82]) by imhotep.cst.cnes.fr (8.6.12/MH-19960223.01) with SMTP id KAA14389; Tue, 18 Aug 1998 10:58:28 +0200 From: "Kevin Kyeong-il CHOI" To: "FreeBSD Question" , "FreeBSD Net" Subject: Questions on TCPDUMP, TCP Window Size Date: Tue, 18 Aug 1998 10:58:15 +0200 Message-Id: <000501bdca86$55eac6c0$52099584@pc-kichoi.cst.cnes.fr> MIME-Version: 1.0 X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2232.26 Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0006_01BDCA97.197396C0" Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org This is a multi-part message in MIME format. ------=_NextPart_000_0006_01BDCA97.197396C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Hi, I have another question. I'm actually working on the TCP observation. I saw the article http://www.psc.edu/networking/perf_tune.html Then, I tried to change the system variables of FreeBSD 2.2.6 to obtain a large TCP window size. (1) First question. I want to make the RFC1323 works on FreeBSD 2.2.6. Is there any special procedure I need to do ? (2) Second. Once the (1) question resolved, How can I make TCP's option "Window Scale" work on any connection such as FTP ? (3) Third TCPDUMP, as a real good utility to observe the traffic on TCP connection, I really want to use this. BUT, But, whenever I launch this "tcpdump [enter]", it tells me, tcpdump: /dev/bpf0: Device not configured. I tried to change chmod 666 /dev/bpf0, but no succeed. What is the problem here ? Thanks for everyone who answer me... :) ------------------------------------- Kevin Kyeong-il CHOI ~'/ (o\) ^ \___/o Doctoral Research Engineer Service DEE/IR/TL/ES Centre National d'Etudes Spatiales 18 Avenue Edouard-Belin 31401 Toulouse cedex 4 France (T) +33-561 28 15 31 (F) +33-561 28 29 13 (Email) kevin.choi@cnes.fr ------------------------------------- ------=_NextPart_000_0006_01BDCA97.197396C0 Content-Type: application/octet-stream; name="Kevin Kyeong-il CHOI.vcf" Content-Transfer-Encoding: 7bit Content-Disposition: attachment; filename="Kevin Kyeong-il CHOI.vcf" BEGIN:VCARD VERSION:2.1 N:CHOI;Kevin;Kyeong-il;; FN:Kevin Kyeong-il CHOI ORG:CNES; TITLE:Dr TEL;WORK;VOICE:(05) 61 28 15 31 TEL;HOME;VOICE:(05) 62 17 01 99 EMAIL;PREF;INTERNET:kevin.choi@cnes.fr REV:19980710T091856Z END:VCARD ------=_NextPart_000_0006_01BDCA97.197396C0-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message