From owner-freebsd-questions Thu Aug 20 01:05:55 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id BAA12748 for freebsd-questions-outgoing; Thu, 20 Aug 1998 01:05:55 -0700 (PDT) (envelope-from owner-freebsd-questions@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 BAA12743 for ; Thu, 20 Aug 1998 01:05:53 -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 KAA02235 for ; Thu, 20 Aug 1998 10:05:02 +0200 (MET DST) Received: from imhotep.cst.cnes.fr (unverified) by pasteur.cst.cnes.fr (Content Technologies SMTPRS 2.0.15) with SMTP id ; Thu, 20 Aug 1998 10:05:54 +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 KAA13049; Thu, 20 Aug 1998 10:05:38 +0200 From: "Kevin Kyeong-il CHOI" To: "Roland Yeo" , "Doug White" , "Kevin M. Lahey" Cc: "FreeBSD Question" Subject: Re RE: Questions on TCPDUMP, TCP Window Size Date: Thu, 20 Aug 1998 10:05:27 +0200 Message-Id: <000301bdcc11$4b288920$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 In-Reply-To: <199808182127.OAA18841@gecko.nas.nasa.gov> Importance: Normal X-MimeOLE: Produced By Microsoft MimeOLE V4.72.3110.3 Content-Type: multipart/mixed; boundary="----=_NextPart_000_0004_01BDCC22.0EB46660" Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG This is a multi-part message in MIME format. ------=_NextPart_000_0004_01BDCC22.0EB46660 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Dear Roland, Kevin & Doug, Thanks all of you. It works. As resume, to make the RFC 1323 work, (1) I changed 'tcp_extensions=YES' in rc.conf (2) I also made the socket buffer sizes bigger; sysctl -w kern.maxsockbuf=1000000 sysctl -w net.inet.tcp.sendspace=500000 sysctl -w net.inet.tcp.recvspace=500000 Then it shows effectively wscale option in SYN packet. And to make TCPDUMP work, (1) I added in kernel config file, pseduo-device bpfilter 4 (2) then rebuilt the kernel. It works perfectly. My FreeBSD is 2.2.6, so it proves the above system variables exist. Furthermore, if anyone had already tried to install "dummynet" package, I'd like to listen to your opinion before I enter into that. Thanks all, and thanks in advance. ;) ------------------------------------- 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_0004_01BDCC22.0EB46660 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_0004_01BDCC22.0EB46660-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message