On Monday, 17 February 2003 at 22:08:41 -0700, Shane Hickey wrote:
> Howdy all,
>       I have a freebsd firewall and I want to be able to do make both passive
> and active ftp client connections from my inside network to the outside
> world.  I'm using ipf and ipnat compiled into the kernel.  I followed
> the IPF HOWTOs that I've read and I'm hitting a brick wall.
>       My outside interface is dc0 and let's say my outside IP is 1.1.1.1. 
> I've tried both of the following rules in my /etc/ipnat.rules file with
> no success.
> 
> map dc0 0/0 -> 1.1.1.1/32 proxy port 21 ftp/tcp
> map dc0 0/0 -> 0/32 proxy port ftp ftp/tcp
> 
>       When I say no success, I mean that I am able to establish a remote ftp
> connection, but when I do a 'ls' I get a
> 
> 425 Can't build data connection: No route to host
> 
> I'm sure I'm doing something foolish, so any advice would be greatly
> appreciated.  Oh yeah, I'm running FreeBSD5.0-release and IPF version
> 3.4.29.
>
My ipf.rules for passive FTP contains:
pass in quick on rl0 proto tcp from any to any port = 21 flags S keep state keep frags
pass in quick on rl0 proto tcp from any to any port > 1023 flags S keep state
And ipnat.rules:
map rl0 192.168.1.0/24 -> 0.0.0.0/32 proxy port ftp ftp/tcp
Kjell

> Thanks in advance for any help.
> 
> --
> Shane Hickey : Network/System Consultant
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