Extremely simple redirect rule doesnt appear to be working

[Tim Traver]

Chris Buechler wrote:
> On Mon, Jul 6, 2009 at 1:28 AM, Tim Traver<tt-list at simplenet.com> wrote:
>   
>> Thanks for responding. I am indeed testing this from within the same
>> machine, as I need the redirection to take place when attempting to make
>> requests FROM the machine to an outside source.
>>
>> Is there not a way to do that with pf ???
>>
>>     
>
> There are multiple options, see:
> http://www.openbsd.org/faq/pf/rdr.html
>   

Chris,

yes, that is where I originally got all of the information, and made my 
original post with my redirection line in the pf.conf that does not 
appear to be doing anything. I couldn't figure out why, hence the post here.

Here is a copy of the original post if you think you might have any 
insight...

Hi all,

ok, I'm a little new to messing around with pf, but have come up for a 
need that it sounds like it should be able to solve.

I want to be able to redirect outgoing http requests from the box back 
to local addresses on the box...

In reading up, it appears that the redirect config line should do that, 
and in testing, I have a simple line like this in the pf.conf

rdr pass inet proto tcp from any to 209.131.36.158 port 80 -> [internal 
address here] port 80

now, I haven't made that internal address be an address on the local box 
yet, cause I'm testing to see how this works...

I can manually telnet to [internal address here] port 80 with no 
problems and get the apache greeting.

Once I turn on and load the pf.conf file (with pfctl -F all -f 
/etc/pf.conf), and I try to telnet to 209.131.36.158 port 80 (generic 
www.yahoo.com), I don't get redirected to the internal address port 80 
and get the apache greeting that is expected...

I did turn on port forwarding as per the instructions for NAT, although 
it didn't say if it was needed for rdr.

net.inet.ip.forwarding=1

in netstat, I see it trying to actually reach the ouside IP, which it 
cant, so the translation didn't appear to take affect...

am I missing something ?

Thanks,

Tim.