Not to flame Billy. But I would suggest that you man ipnat!!!

Dean Carey

PGP public key available upon request.

-----Original Message-----
From: Billy [mailto:_bil_mail.ru]
Sent: Tuesday, May 01, 2001 2:54 PM
To: Dean Carey
Cc: wfmmacscan.co.uk; miscopenbsd.org
Subject: Re: simple IPF and IPNAT but problem between chair and keyboard

Tue, 1 May 2001 11:42:32 -0400 Dean Carey <dcareydolfin.com> ÐÉÛÅÔ:

> redirects need to be placed before mappings!!!
you are not right
alomost all examples gives redirs after maps
and my ipnat.conf is working havind rdr after map

>
> try that and post again if no luck! ;-)
>
>
>
> Dean Carey
> PGP public key available upon request.
>
>
>
> -----Original Message-----
> From: Will Macdonald [mailto:wfmmacscan.co.uk]
> Sent: Tuesday, May 01, 2001 11:20 AM
> To: miscopenbsd.org
> Subject: simple IPF and IPNAT but problem between chair and keyboard
>
>
> I installed the 2.9 snapshot on a machine yesterday, and configures using
> the same rules I had applied to a 2.8 machine recently, and am having
> serious problems use rdr to send SMTP/www traffice to a machine on
> internal
> network.
>
> I have simplified the rules as much as possible, but no joy. I've also
> read
> through www.obfuscation.org/ipf without any luck.
>
> Can someone see what is wrong ?? I have modified the file sysctl.conf and
> rc.conf accordingly. All traffic behind the NAT machine works OK, but when
> I
> try to telnet to port 25 from outside i get no response.
>
> In the ipnat.rules file I tried having the map rules after the rdr rules,
> but no luck either way.
> /etc/ipnat.rules
> map ep0 10.1.1.7/24 -> 123.123.123.123/32 portmap tcp/udp 1025:65000
> map ep0 10.1.1.7/24 -> 123.123.123.123/32
>
> #map ppp0 10.0.0.0/8 -> ppp0/32 portmap tcp/udp 10000:20000
> rdr ep0 123.123.123.123/32 port 25 -> 10.1.1.1 port 25
> rdr ep0 123.123.123.123/32 port 80 -> 10.1.1.1 port 80
> rdr ep0 123.123.123.123/32 port 110 -> 10.1.1.1 port 110
> rdr ep0 123.123.123.123/32 port 143 -> 10.1.1.1 port 143
> rdr ep0 123.123.123.123/32 port 993 -> 10.1.1.1 port 993
>
>
> /etc/ipf.rules
> pass in from any to any
> pass out from any to any
>
> pass in quick on ep0 proto tcp from any to 123.123.123.123/32 port = 25
> keep
> state
> pass in quick on ep0 proto tcp from any to 123.123.123.123/32 port = 80
> keep
> state
> pass in quick on ep0 proto tcp from any to 123.123.123.123/32 port = 143
> keep state
> pass out quick on ep0 proto tcp from any to any keep state

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