Date: Wed, 15 Aug 2001 15:39:59 +1000 From: Peter MacGee <peter@ideal.net.au> To: Adam LaBarge <phinger@best.com> Cc: freebsd-newbies@FreeBSD.ORG Subject: Re: port forwarding with natd Message-ID: <5.1.0.14.2.20010815153024.0224fcc0@mail.ideal.net.au> In-Reply-To: <Pine.BSF.4.21.0108142206460.1190-100000@shell18.ba.best.co m>
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--=====================_513315078==_.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed Hi Adam, At 10:14 PM 14/08/2001 -0700, you wrote: >Hi, I am trying to forward port 25 from a FreeBSD router, running natd >with an open firewall to an internal machine running FreeBSD set up as a >sendmail server. So, I have tried two ways to forward this port, but can >not get it to work. Way 1) in /etc/natd.conf I added the line >permanent_link tcp internalmachineaddress:25 0:0 25 >way 2) was from the command line, and that just hung, this is what I could >figure best. >natd -redirect_port internalmachne:25 myIP:25 25 >That would hang, not even a sintax error. I know that natd runs great, i >have been using this router for about 8 month now, works great. The only >open connection port to the router is 22. all other tcp is passed to the >machines inside. I know that sendmail is working ok on the internal >sendmail server, i telnet to port 25 and it give me the sendmail info. I >just used the defualt sendmail set up. I also know that the domain >information is set up coorectly. So, i figure it is just the forwarding >of the port that is messing things up. If anyones has done this, or knows >any way to get it working. please help, it is driving me mad. thanks I use a program called netcat (/usr/ports/net/netcat). It does exactly what you want to do if you want to use it as a temporary fix until you find the correct way to do things using natd. Netcat is very simple to get going as well... Install and then add/alter the relevant line in your inetd.conf file eg. smtp stream tcp nowait nobody /usr/sbin/nc nc xxx.xxx.xxx.xxx 25 where xxx.xxx.xxx.xxx is your internal machine. After this has been done, give (as root): killall -HUP inetd and everything should be happening happily. I use this particular set up for "forwarding" port 80 requests made to my FreeBSD "router" to a machine on my internal network. Hope this helps, Pete. >-adam > > >Software is just frozen thought. Nothing more, nothing less. > > >To Unsubscribe: send mail to majordomo@FreeBSD.org >with "unsubscribe freebsd-newbies" in the body of the message -- Computers are just like air conditioners; They don't work properly if you open Windows. --=====================_513315078==_.ALT Content-Type: text/html; charset="us-ascii" <html> Hi Adam,<br><br> At 10:14 PM 14/08/2001 -0700, you wrote:<br> <blockquote type=cite class=cite cite>Hi, I am trying to forward port 25 from a FreeBSD router, running natd<br> with an open firewall to an internal machine running FreeBSD set up as a<br> sendmail server. So, I have tried two ways to forward this port, but can<br> not get it to work. Way 1) in /etc/natd.conf I added the line <br> permanent_link tcp internalmachineaddress:25 0:0 25<br> way 2) was from the command line, and that just hung, this is what I could<br> figure best.<br> natd -redirect_port internalmachne:25 myIP:25 25<br> That would hang, not even a sintax error. I know that natd runs great, i<br> have been using this router for about 8 month now, works great. The only<br> open connection port to the router is 22. all other tcp is passed to the<br> machines inside. I know that sendmail is working ok on the internal<br> sendmail server, i telnet to port 25 and it give me the sendmail info. I<br> just used the defualt sendmail set up. I also know that the domain<br> information is set up coorectly. So, i figure it is just the forwarding<br> of the port that is messing things up. If anyones has done this, or knows<br> any way to get it working. please help, it is driving me mad. thanks<br> </blockquote><font size=4><br> I use a program called netcat (/usr/ports/net/netcat). It does exactly what you want to do if you want to use it as a temporary fix until you find the correct way to do things using natd.<br><br> Netcat is very simple to get going as well... Install and then add/alter the relevant line in your inetd.conf file eg.<br><br> smtp stream tcp nowait nobody /usr/sbin/nc nc xxx.xxx.xxx.xxx 25<br><br> where xxx.xxx.xxx.xxx is your internal machine. After this has been done, give (as root):<br> killall -HUP inetd<br> and everything should be happening happily.<br><br> I use this particular set up for "forwarding" port 80 requests made to my FreeBSD "router" to a machine on my internal network.<br><br> Hope this helps,<br><br> Pete.<br><br> </font><blockquote type=cite class=cite cite>-adam<br><br> <br> Software is just frozen thought. Nothing more, nothing less.<br><br> <br> To Unsubscribe: send mail to majordomo@FreeBSD.org<br> with "unsubscribe freebsd-newbies" in the body of the message</blockquote> <x-sigsep><p></x-sigsep> --<br> Computers are just like air conditioners; They don't work properly if you open Windows.</html> --=====================_513315078==_.ALT-- To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-newbies" in the body of the message
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