From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jacob Friis Larsen <jfl@list.idg.dk>
Subject: Re: Port is open but I am unable to connect
Date: Thu, 09 Sep 2004 12:17:40 +0200
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Cc: Aleksandar Milivojevic <amilivojevic@pbl.ca>

With the changes I still can't connect. I also use bonding if that's 
important.

<script>
#!/bin/sh

# Modules
modprobe ip_conntrack_ftp
modprobe ip_nat_ftp

# Defaults
iptables -P INPUT DROP
iptables -P FORWARD DROP
iptables -P OUTPUT DROP

# Flush
iptables -t nat -F POSTROUTING
iptables -t nat -F PREROUTING
iptables -t nat -F OUTPUT
iptables -F

# STATE RELATED for router
iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
iptables -A OUTPUT -m state --state ESTABLISHED,RELATED -j ACCEPT

# Localhost
iptables -A INPUT -i lo -j ACCEPT
iptables -A OUTPUT -o lo -j ACCEPT

# Open ports on router for server/services
#iptables -A INPUT -s 1.2.3.4 -j ACCEPT -p tcp --dport 20 -m state 
--state NEW
iptables -A INPUT -s 1.2.3.4 -j ACCEPT -p tcp --dport 21 -m state 
--state NEW
iptables -A INPUT -s 1.2.3.4 -j ACCEPT -p tcp --dport 22 -m state 
--state NEW
iptables -A INPUT -j ACCEPT -p tcp --dport 25 -m state --state NEW
iptables -A INPUT -j ACCEPT -p tcp --dport 80 -m state --state NEW
iptables -A INPUT -j ACCEPT -p tcp --dport 143 -m state --state NEW
iptables -A INPUT -j ACCEPT -p tcp --dport 993 -m state --state NEW
</script>