I think I understand the request. I would also like this option. Perhaps "proxy" is 
not the right term for the feature that is needed.

Using IPFilter on a bridge looks like a layer 2 device but makes decisions based on 
layer 3 or higher content.

The last time I tried this was with v3.4.16. It didn't work.

If you use a default policy to deny on a filtering bridge, most protocols pass easily 
using the "keep state" option. However, active FTP fails. An option like "keep ftp 
state" would be great. It would need to examine the PORT command in order to add a 
temporary state table entry that would allow the returning connection.

I'm new the the list, but I didn't turn up anything in the archives.

-Chris

At 7:45 PM -0500 6/11/02, taproot420 wrote:
>How can you use a bridge for a proxy? A bridge does not have IP protocol
>addresses associated with its interfaces, it only has Ethernet
>addresses. I don't think you can use a bridge for anything other than a
>filtering gateway at least not network wise.
>
>-----Original Message-----
>From: [EMAIL PROTECTED]
>[mailto:[EMAIL PROTECTED]] On Behalf Of Ken Diliberto
>Sent: Tuesday, June 11, 2002 5:06 PM
>To: [EMAIL PROTECTED]
>Subject: FTP Proxy with IPF 3.4.28
>
>I tried using the FTP Proxy on my little OpenBSD 3.1 machine running as
>a bridge.  It appears the proxy will not kick in because the NAT engine
>isn't used for the bridge.  Is there any way around this?  Am I doing
>something wrong?  It's a generic install of OpenBSD and IPF.
>
>Thanks.
>
>Ken


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