Date: Wed, 20 Oct 1999 21:15:15 -0400 (EDT) From: "Joe \"Marcus\" Clarke" <marcus@miami.edu> To: Julian Diego Herrera Braga <julianherrera@uol.com.br> Cc: freebsd-ipfw@FreeBSD.ORG, freebsd-questions@FreeBSD.ORG Subject: Re: En: What about port redirection with ip aliasing ? Message-ID: <Pine.OSF.4.10.9910202112340.18550-100000@jaguar.ir.miami.edu> In-Reply-To: <008401bf1b5f$ceb9f640$8314bfc8@etherial>
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Check out the ppp manpage. The nat port command (or alias port) should do
what you want. To quote:
nat port proto targetIP:targetPort[-targetPort] aliasPort[-aliasPort]
[remoteIP:remotePort[-remotePort]]
This command causes incoming proto connections to aliasPort
to be redirected to targetPort on targetIP. proto is either
``tcp'' or ``udp''.
Joe Clarke
p.s. this assumes a current version of ppp from
http://www.freebsd.org/~brian
On Wed, 20 Oct 1999, Julian Diego Herrera Braga wrote:
> Hello...
>
> One day my computer was without available ISA slots. I installed FreeBSD but
> the damned Winmodem doesn't work, so I had a idea to resurrect the other
> pentium 100 computer to use its free slots to install an old 14kbps modem.
> FreeBSD was also loaded in this computer as a gateway to the other computer
> without modem and the internet by ip aliasing (ppp -alias). Since the
> gateway computer doesn't have better space (170mb) and power to install some
> other programs, I would like to use it only for a gateway. This is the small
> LAN :
>
> ------------------ ----------------------
> | ether.nostromo | serial | ppprouter.nostromo | 14kbps ------------
> | 192.168.1.2 |---------| 192.168.1.1 |---------| Internet |
> ------------------ cable ---------------------- modem ------------
> P2 450Mhz Old Pentium 100 Mhz
> FreeBSD 3.2 FreeBSD 3.1
> (ppp nullmodem) (ppp -alias isp)
> (ppp nullmodem)
> natd [options]
>
> My problems appeared when I tried to access the client computer from
> internet through the gateway. Such connection always finished on the
> gateway computer. Finally, what I want to know is how can I get all
> the gateway ports from telnetd, ftpd, httpd etc. redirected to the
> respective client ports. Basically, is something like to make the
> gateway computer ports invisible to the outside computers, so any
> connection addressed to its IP will finish into the client computer
> (ether.nostromo). Is this possible ? How ? Thank you for the attention.
>
> P.S.: I've used "natd -port_redirect 192.168.1.1:ftp ftp" and nothing has
> changed. I tried some other options, but I am not sure what is the best
> one. Is there any known natd guide on the internet for FreeBSD ?
>
> Regards,
> Julian Herrera mailto:julianherrera@uol.com.br
>
>
>
>
>
>
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