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Old 09-22-2005, 01:35 PM   #1
stomach
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Registered: Sep 2005
Distribution: Debian
Posts: 202

Rep: Reputation: 30
problem iptables


I liberated everything to test.

The Problem that the redirect of the door does not function!

It only functions if the policing INPUT is ACCEPT.
Somebody can help me?



#!/bin/bash
modprobe iptable_nat
modprobe ip_conntrack
modprobe ip_nat_ftp

iptables -F
iptables -Z
iptables -X
iptables -t nat -F

iptables -P INPUT DROP
iptables -P FORWARD DROP


iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
echo 1 > /proc/sys/net/ipv4/ip_forward
echo 1 > /proc/sys/net/ipv4/ip_dynaddr

iptables -t nat -A PREROUTING -i eth0 -p tcp --dport 8080 -j REDIRECT --to-port 80


iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A INPUT -i lo -j ACCEPT
iptables -A INPUT -i eth1 -j ACCEPT
iptables -A INPUT -i eth0 -p tcp --dport 8080 --syn -j ACCEPT

iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A FORWARD -i eth1 -j ACCEPT

Last edited by stomach; 09-22-2005 at 01:39 PM.
 
Old 09-22-2005, 01:46 PM   #2
Matir
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Registered: Nov 2004
Location: San Jose, CA
Distribution: Ubuntu
Posts: 8,507

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Hint: The nat prerouting rules get run before the filter INPUT rules do. In other words: iptables -A INPUT -i eth0 -p tcp --dport 80 -j ACCEPT
 
Old 09-22-2005, 01:50 PM   #3
stomach
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Registered: Sep 2005
Distribution: Debian
Posts: 202

Original Poster
Rep: Reputation: 30
One more time I can count on its aid.

Very thankz Matir!

Last edited by stomach; 09-22-2005 at 01:58 PM.
 
Old 09-22-2005, 02:21 PM   #4
Matir
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Registered: Nov 2004
Location: San Jose, CA
Distribution: Ubuntu
Posts: 8,507

Rep: Reputation: 128Reputation: 128
No problem. Always glad to be able to help.
 
  


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