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I need to setup forwarding on gateway machine with following request from client: Is it possible to setup pf.conf on OpenBSD 4.5 machine, but instead IP address to have given URL such as http://example.com?

I already done settings of port forwarding with IP address. Here it is:

rdr on $ext_if proto tcp from any to $ext_if port 9090 -> 192.168.100.21

Above is Redirection section. And in Filter Rules:

pass in quick on $ext_if inet proto tcp from any to 192.168.100.21 port 9090

This a gateway machine where I only can set port forwarding.

Please, could someone help me - is it possible or not. I read about it, but nowhere found example of souch settings.

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Instead of IP addresses you can put DNS names to pf.conf, too. Those will be resolved once when pf reads its rules. Is that what you want? –  Janne Pikkarainen May 15 '12 at 13:32
    
Yes, that was the initial idea. Thank you very much. I will test it –  Zoran May 16 '12 at 5:33

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