# Generated by iptables-save v1.4.2 on Wed Jun 10 19:58:15 2009 *filter :INPUT ACCEPT [5193:1520500] :FORWARD DROP [11:676] :OUTPUT ACCEPT [3509:357891] -A FORWARD -m state --state RELATED,ESTABLISHED -j ACCEPT -A FORWARD -p udp -m udp --dport 53 -j ACCEPT -A FORWARD -i eth1 -o eth1 -j ACCEPT -A FORWARD -s 192.168.1.120/32 -p tcp -m tcp --dport 443 -j ACCEPT -A FORWARD -s 192.168.1.120/32 -p tcp -m tcp --dport 80 -j ACCEPT -A FORWARD -j REJECT --reject-with icmp-port-unreachable COMMIT # Completed on Wed Jun 10 19:58:15 2009 # Generated by iptables-save v1.4.2 on Wed Jun 10 19:58:15 2009 *nat :PREROUTING ACCEPT [57513:4794059] :POSTROUTING ACCEPT [28:2022] :OUTPUT ACCEPT [14:922] -A PREROUTING -s ! 192.168.1.120/32 -i eth1 -p tcp -m tcp --dport 80 -j DNAT --to-destination 192.168.1.120:8080 -A POSTROUTING -s 192.168.1.0/24 -o eth0 -j SNAT --to-source 10.0.2.100 -A POSTROUTING -s 192.168.1.0/24 -d 192.168.1.120/32 -o eth1 -j SNAT --to-source 192.168.1.1 COMMIT # Completed on Wed Jun 10 19:58:15 2009
#!/bin/bash echo 1 > /proc/sys/net/ipv4/ip_forward modprobe nf_conntrack_ftp modprobe nf_nat_ftp iptables -F iptables -t nat -F iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -i eth1 -j ACCEPT iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -p tcp --dport 22 -j ACCEPT iptables -t nat -A POSTROUTING -o eth0 -s 192.168.2.0/24 -j SNAT --to-source 10.0.2.100 iptables -t nat -A PREROUTING -d 10.0.2.100 -p tcp --dport 1001 -j DNAT --to-destination 192.168.2.121:22 iptables -P INPUT DROP
#!/bin/sh iptables -F INPUT iptables -P INPUT DROP iptables -A INPUT -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A INPUT -i lo -j ACCEPT iptables -A INPUT -m state --state NEW -p tcp --dport 22 -j ACCEPT #iptables -A INPUT -m state --state NEW -p tcp --dport 80 -j ACCEPT #iptables -A INPUT -m state --state NEW -p tcp --dport 21 -j ACCEPT iptables -A INPUT -m state --state NEW -p udp --dport 67 -j ACCEPT iptables -A INPUT -m state --state NEW -p tcp --dport 21 -j ACCEPT iptables -A INPUT -m state --state NEW -p icmp --icmp-type echo-request -j ACCEPT iptables -t nat -F POSTROUTING iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o eth1 -j SNAT --to-source 10.0.3.100 #iptables -t nat -A POSTROUTING -s 192.168.1.0/24 -o eth1 -j MASQUERADE iptables -F FORWARD iptables -A FORWARD -m state --state ESTABLISHED,RELATED -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p tcp --dport 80 -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p tcp --dport 443 -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p udp --dport 53 -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p udp --dport 500 -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p udp --dport 4500 -j ACCEPT #iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p esp -j ACCEPT iptables -A FORWARD -s 192.168.1.0/24 -m state --state NEW -p icmp --icmp-type echo-request -j ACCEPT iptables -A FORWARD -i eth0 -o eth0 -j ACCEPT iptables -A FORWARD -j REJECT