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Old 09-03-2004, 09:44 PM   #1
Doolspin
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Registered: Aug 2004
Location: Ohio
Distribution: Slackware 9.1/10/10.1 RedHat circa 2000, Knoppix, OpenSuse 10.0/10.1
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Port forwarding question


Alright... i have a painfully easy question i'm sure....
I have a DNS machine (slack9.1) with 2 eth's cards. I want a webserver i have another machine on my internal network (slack10) I need to know how to get the DNS to forward the requests on port 80 to the webserver. thanks in advance.
 
Old 09-03-2004, 10:03 PM   #2
zatriz
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run these commands on the dns machine.
Be aware that this will not protect the dns machine by any means and you are better off putting a firewall on the dns machine as well if you haven't done so already.

type these commands as root

/sbin/iptables -t nat -A PREROUTING -p tcp -i eth0 -d xxx.xxx.xxx.xxx --dport 80 -j DNAT --to yyy.yyy.yyy.yyy:80

/sbin/iptables -A FORWARD -p tcp -i eth0 -d yyy.yyy.yyy.yyy --dport 80 -j ACCEPT

xxx.xxx.xxx.xxx is the ip address of the dns machine the machine thats connected to the internet

yyy.yyy.yyy.yyy is the ip of the machine that the webserver is running on .
 
Old 09-03-2004, 10:11 PM   #3
Doolspin
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I already have a firewall up, when i put up the DNS. Thanks alot man, I just wasn't sure what i needed Thanks for the superfast reply too.
 
  


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