Linux NAT server forwarding [ubuntu]
CS/Network 2013. 12. 9. 20:52원문 :
http://www.linuxrookie.com/?p=160
http://www.howtoforge.com/nat_iptables
private interface : eth1
public interface : eth0
1. Open the forward option
# echo 1 > /proc/sys/net/ipv4/ip_forward
or
# vim /etc/sysctl.conf change net.ipv4.ip_forward = 0,let 0 to 1
2. Config NAT rules
# iptables –t nat –A POSTROUTING –s 192.168.100.0/24 –o eth0 –j MASQUERADE
# iptables –A FORWARD –i eth1 –j ACCEPT
3. Permanently update iptables
# apt-get install iptables-persistent
# iptables-save > /etc/iptables/rules.v4