Private paste
#68682: Firewall script - part 2
#!/bin/sh
IPT=/sbin/iptables
$IPT -F
#policies
$IPT -P OUTPUT ACCEPT
$IPT -P INPUT DROP
$IPT -P FORWARD DROP
$IPT -t nat -P OUTPUT ACCEPT
$IPT -t nat -P PREROUTING ACCEPT
$IPT -t nat -P POSTROUTING ACCEPT
$IPT -N SERVICES
#allowed inputs
$IPT -A INPUT --in-interface lo -j ACCEPT
$IPT -A INPUT -j SERVICES
#allow responses
$IPT -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT
#allow services
$IPT -A SERVICES -p tcp --dport 22 -j ACCEPT
$IPT -A SERVICES -p tcp --dport 8080 -j ACCEPT
$IPT -A SERVICES -m iprange --src-range 192.168.1.1-192.168.1.254 -p tcp --dport 631 -j ACCEPT
$IPT -A SERVICES -m iprange --src-range 192.168.1.1-192.168.1.254 -p udp --dport 631 -j ACCEPT
$IPT -t nat -A PREROUTING -p tcp --dport 80 -j REDIRECT --to-ports 8080
$IPT -A FORWARD -p tcp --dport 8080 -j ACCEPT
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