Posts Tagged firewall

Firewall in Linux (IPTABLES)

cat > /etc/rc.firewall

#!/bin/sh

# Variables
FW="/sbin/iptables"
IF1="eth0"
IF1_IP=`/sbin/ifconfig ${IF1}|grep -w inet|awk -F: '{print $2}'|awk '{print $1}'`
IF1_MASK=`/sbin/ifconfig ${IF1}|grep -w inet|awk '{print $4}'|awk -F: '{print $2}'`
IF1_NET="${IF1_IP}/${IF1_MASK}"

# Temporarily Change the Default Policy to Accept
${FW} -P INPUT ACCEPT
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