Date: Mon, 8 Apr 2002 10:36:46 +0300 From: Ruslan Ermilov <ru@FreeBSD.ORG> To: Giannis Nikopoulos <nikop@zeus.cs.uoi.gr> Cc: freebsd-ipfw@FreeBSD.ORG Subject: Re: Load balancing with NATD Message-ID: <20020408073646.GE45269@sunbay.com> In-Reply-To: <200204071726.UAA12257@pontus.cs.uoi.gr> References: <200204071726.UAA12257@pontus.cs.uoi.gr>
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[-- Attachment #1 --] Search for "LSNAT" in the natd(8) manpage. On Sun, Apr 07, 2002 at 08:26:32PM +0300, Giannis Nikopoulos wrote: > Hello everybody !!! > > I 'm just a new member of both the FreeBSD world and this list > so I hope you will bare with my ignorance. > > This is the problem: > > I have a FreeBSD 4.5 running as a router between the outer world and > a private network (192.168.0.0) of 3 servers. I use natd to handle > traffic between the outer world and the PN. My goal (as part of a simple > university course project) is to perform load balancing among the 3 > back-end servers. I 've written down a load balancing algorithm, that > uses reporting agents running on the 3 servers and reporting their load > on a central coordinator running on the FreeBSD router. The question is: > > How can I use natd (or maybe another tool, say ipfw or some proxy, I don't > know) in order to dynamically dispatch (redirect) incoming connections > among the 3 back-end servers. As far as I can tell, natd performs redirection > (along with address translation) but in a static way (correct me if I 'm > wrong, I 've already explained I 'm new to this stuff). > > Is there any I way I can instruct natd to selectively choose to which server > it will redirect a connection by applying a set of rules or I will have to > hack into natd's source code. > > I don't know if I should have provided more feedback on this case but or be > a little more specific. Can anyone help ? > > Thanx in advance > > -- > Ioannis K. Nikopoulos > Postgraduate Student and Reasearcher > Computer Science Department > University of Ioannina > GREECE -- Ruslan Ermilov Sysadmin and DBA, ru@sunbay.com Sunbay Software AG, ru@FreeBSD.org FreeBSD committer, +380.652.512.251 Simferopol, Ukraine http://www.FreeBSD.org The Power To Serve http://www.oracle.com Enabling The Information Age [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.6 (FreeBSD) Comment: For info see http://www.gnupg.org iD8DBQE8sUiOUkv4P6juNwoRAp7XAJ9/WAH0wXjsmNcAVL0OtX9kIGbqRwCfdaaF hmdxzN+cFkayUcj+EmFJtFc= =RUNW -----END PGP SIGNATURE-----
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