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i need to do a setting a bit unusual.

I have 3 machines with public Ips. I want to use one of them as a load balancer for the 2 others.

My machine >> machine1 who redirect the connection to machine 2 or 3.

If machine1 has 1 private ip on a network card and another network card with a public ip it work without any problem using very simple rules like :

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    umm... like what? Jun 25, 2011 at 5:29
  • Please add more details and clarify the question or suggest it for deletion. The quality is so low as to be unhelpful for others searching for pf help.
    – polynomial
    Sep 23, 2011 at 6:58

1 Answer 1

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I'm having a hard time understanding exactly what you want to do here... a network diagram and more detail would be extremely helpful. To redirect traffic using pf you need to use the rdr-to directive.

Here's an example where I'm redirecting traffic through my firewall to my webserver on the other side:

# redirect external web traffic to darkstat
pass in log on $ext_if inet proto tcp to ($ext_if) port 8080 \
rdr-to 192.168.0.250 port 80

(I'm using NAT so these rules look a little different than if you were just matching and redirecting ingress traffic... see the manpage for details).

To do basic Layer-3/4 load balancing you might try something like this. If you need a Layer-7 aware approach consider using relayd.

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