From owner-freebsd-questions Wed Oct 30 14:18: 5 2002 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 5230537B401 for ; Wed, 30 Oct 2002 14:18:04 -0800 (PST) Received: from mailsrv.otenet.gr (mailsrv.otenet.gr [195.170.0.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id D26D543EAF for ; Wed, 30 Oct 2002 14:18:01 -0800 (PST) (envelope-from keramida@ceid.upatras.gr) Received: from gray.sea.gr (patr530-b196.otenet.gr [212.205.244.204]) by mailsrv.otenet.gr (8.12.6/8.12.6) with ESMTP id g9UMHvun027287; Thu, 31 Oct 2002 00:17:58 +0200 (EET) Received: from gray.sea.gr (gray [127.0.0.1]) by gray.sea.gr (8.12.6/8.12.6) with ESMTP id g9UMHBW5016658; Thu, 31 Oct 2002 00:18:20 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Received: (from keramida@localhost) by gray.sea.gr (8.12.6/8.12.6/Submit) id g9UJPmxe002426; Wed, 30 Oct 2002 21:25:48 +0200 (EET) (envelope-from keramida@ceid.upatras.gr) Date: Wed, 30 Oct 2002 21:25:47 +0200 From: Giorgos Keramidas To: adrian kok Cc: questions@freebsd.org Subject: Re: lo0 Message-ID: <20021030192546.GA1882@gray.sea.gr> References: <20021028153550.56092.qmail@web21210.mail.yahoo.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20021028153550.56092.qmail@web21210.mail.yahoo.com> Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On 2002-10-28 23:35, adrian kok wrote: > > I don't understand about the interface lo0 > If it is for loopback, why I got the following from > ipfw -a list > but I didn't ping 127.0.0.1 A network interface doesn't exist solely for the purpose of being able to run ping on it. Other tools might want to look up the host name or address of 127.0.0.1 and connect to it. For instance, at home that I have started a caching named process, programs connect to udp or tcp port 53 (the dns server port) all the time. > What is about 112 hits ? Some program that connects to the local host. You'd have to write special rules and/or start logging stuff to find out exactly what program this would be. > And what exactly lo0 function? To provide a convenient connection point for programs that are written using sockets, but have to communicate with other processes running on the same machine. What else? :-) Giorgos. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message