Date: Sun, 7 Apr 2002 20:26:32 +0300 (EET DST) From: Giannis Nikopoulos <nikop@zeus.cs.uoi.gr> To: freebsd-ipfw@freebsd.org Subject: Load balancing with NATD Message-ID: <200204071726.UAA12257@pontus.cs.uoi.gr>
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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 For more information: http://www.cs.uoi.gr/~nikop To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-ipfw" in the body of the message
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