Author Topic: IPTables help needed (Read 2022 times)

jetboy · « **on:** October 31, 2011, 09:29:09 PM »

Does anyone know their way around IPTables? I'm trying to get NAT port forwarding to work, with the eventual aim of routing all SSH and ILO traffic through a single external IP into the rack on different ports. I can't even get the basics working though. This would be a good start:

. I open a browser on my home machine (IP 1.2.3.4) and put the public eth0 IP of my datacentre machine in a browser, with a port of 88 (5.6.7.8:88).
. I want to forward the request to Slashdot (216.34.181.45:80) so I see Slashdot in my browser.

How?

jetboy · « **Reply #1 on:** November 01, 2011, 03:26:25 PM »

Code: [Select]

echo 1 > /proc/sys/net/ipv4/ip_forward

Code: [Select]

iptables -t nat -A PREROUTING -i eth0 -p tcp -m tcp --dport 88 -j DNAT --to-destination 216.34.181.45:80 
iptables -t nat -A POSTROUTING -o eth0 -j SNAT --to-source 5.6.7.8

or

Code: [Select]

*nat
-A PREROUTING -p tcp -m tcp -i eth0 --dport 88 -j DNAT --to-destination 216.34.181.45:80
-A POSTROUTING -o eth0 -j SNAT --to-source 5.6.7.8
COMMIT

if it's in a .conf file. Sweet.

The Core

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Author Topic: IPTables help needed (Read 2022 times)

jetboy

IPTables help needed

jetboy

Re: IPTables help needed