From owner-freebsd-questions@FreeBSD.ORG Tue Feb 15 06:17:34 2005 Return-Path: Delivered-To: freebsd-questions@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id C77DB16A4CE for ; Tue, 15 Feb 2005 06:17:34 +0000 (GMT) Received: from hosea.tallye.com (joel.tallye.com [216.99.199.78]) by mx1.FreeBSD.org (Postfix) with ESMTP id 547AB43D31 for ; Tue, 15 Feb 2005 06:17:30 +0000 (GMT) (envelope-from lorenl@alzatex.com) Received: from hosea.tallye.com (hosea.tallye.com [127.0.0.1]) by hosea.tallye.com (8.12.8/8.12.10) with ESMTP id j1F6HOGf011686 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 14 Feb 2005 22:17:24 -0800 Received: (from sttng359@localhost) by hosea.tallye.com (8.12.8/8.12.10/Submit) id j1F6HNlS011684; Mon, 14 Feb 2005 22:17:23 -0800 X-Authentication-Warning: hosea.tallye.com: sttng359 set sender to lorenl@alzatex.com using -f Date: Mon, 14 Feb 2005 22:17:23 -0800 From: "Loren M. Lang" To: ann kok Message-ID: <20050215061723.GC31198@alzatex.com> References: <20050213065610.GX8619@alzatex.com> <20050214192103.47832.qmail@web52008.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20050214192103.47832.qmail@web52008.mail.yahoo.com> User-Agent: Mutt/1.4.1i X-GPG-Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc X-GPG-Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C cc: "Loren M. Lang" cc: freebsd-questions@freebsd.org cc: ean@hedron.org Subject: Re: ping question X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 15 Feb 2005 06:17:35 -0000 On Mon, Feb 14, 2005 at 11:21:03AM -0800, ann kok wrote: > Hi all > > Thank you very much for your help > > The freebsd router is behind the cisco router. > > Do you have any experience to determine the traffic is > in freebsd and cisco from outside? > > Can traceroute give figure to prove it? I'm not quite sure if I understand what you're asking, but if you want to see what traffic is going into/out of/through them, tcpdump is a good command-line based packet sniffer and ethereal is it's gui cousin. You can even use tcpdump to capture data and later view it on a different computer with ethereal. iptraf will show you general usage of the traffic crossing your router. If your asking to see what path the traffic is taking from point A to point B, then traceroute is your best friend. > > Please help > > Thank you again > > --- "Loren M. Lang" wrote: > > > On Sat, Feb 12, 2005 at 08:50:32AM -0800, ann kok > > wrote: > > > Hi all > > > > > > I ping from redhat to cisco router and freebsd > > router > > > but I don't understand ttl (time to live) > > > > > > Cisco router has ttl=251 and freebsd router has 58 > > > Does it set by the router itself? > > > Can I change it in freebsd? > > > > FreeBSD's default ttl, I believe, is 64, Cisco's is > > probably 255. As > > long as the number of hops neccessary to get to a > > certain computer is > > never more than 64, there's nothing wrong with it. > > The highest I've > > seen is about 30 and the Internet is going to have > > to grow a bit, I > > think, before it's an issue. > > > > > > > > Thank you > > > > > > 64 bytes from 212.223.x.193: icmp_seq=1151 ttl=251 > > > time=100 ms > > > 64 bytes from 212.223.x.193: icmp_seq=1152 ttl=251 > > > time=103 ms > > > 64 bytes from 212.223.x.193: icmp_seq=1153 ttl=251 > > > time=104 ms > > > 64 bytes from 212.223.x.193: icmp_seq=1154 ttl=251 > > > time=106 ms > > > > > > 64 bytes from 212.x.254.4: icmp_seq=1182 ttl=58 > > > time=105 ms > > > 64 bytes from 212.x.254.4: icmp_seq=1183 ttl=58 > > > time=105 ms > > > 64 bytes from 212.x.254.4: icmp_seq=1184 ttl=58 > > > time=104 ms > > > 64 bytes from 212.x.254.4: icmp_seq=1185 ttl=58 > > > time=108 ms > > > > > > __________________________________________________ > > > Do You Yahoo!? > > > Tired of spam? Yahoo! Mail has the best spam > > protection around > > > http://mail.yahoo.com > > > _______________________________________________ > > > freebsd-questions@freebsd.org mailing list > > > > > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > > To unsubscribe, send any mail to > > "freebsd-questions-unsubscribe@freebsd.org" > > > > -- > > I sense much NT in you. > > NT leads to Bluescreen. > > Bluescreen leads to downtime. > > Downtime leads to suffering. > > NT is the path to the darkside. > > Powerful Unix is. > > > > Public Key: > > ftp://ftp.tallye.com/pub/lorenl_pubkey.asc > > Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 > > 7A46 E4A3 280C > > > > _______________________________________________ > > freebsd-questions@freebsd.org mailing list > > > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > > To unsubscribe, send any mail to > > "freebsd-questions-unsubscribe@freebsd.org" > > > > > __________________________________________________ > Do You Yahoo!? > Tired of spam? Yahoo! Mail has the best spam protection around > http://mail.yahoo.com -- I sense much NT in you. NT leads to Bluescreen. Bluescreen leads to downtime. Downtime leads to suffering. NT is the path to the darkside. Powerful Unix is. Public Key: ftp://ftp.tallye.com/pub/lorenl_pubkey.asc Fingerprint: B3B9 D669 69C9 09EC 1BCD 835A FAF3 7A46 E4A3 280C