Moxa UC-7110-LX [29/46] Nat example

UC-7101/7110/7112 Software User’s Manual Configuring UC-7101/7110/7112

4-7

NAT Example

The IP addresses of all packets leaving LAN1 are changed to 192.168.3.127 (you will need to load

the module ipt_MASQUERADE):

#echo 1 > /proc/sys/net/ipv4/ip_forward

2. insmod /lib/modules/2.6.19-uc1MoXaRt/kernel/net/netfilter/x_tables.ko

3. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/netfilter/xt_multiport.ko

4. insmod /lib/modules/2.6.19-uc1MoXaRt/kernel/net/netfilter/xt_MARK.ko

5. insmod /lib/modules/2.6.19-uc1MoXaRt/kernel/net/netfilter/xt_tcpudp.ko

6. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/ipv4/netfilter/ip_tables.ko

7. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/ipv4/netfilter/ip_nat.ko

8. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/ipv4/netfilter/iptable_nat.ko

9. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/ipv4/netfilter/ipt_MASQUERADE

.ko

10. insmod

/lib/modules/2.6.19-uc1MoXaRt/kernel/net/ipv4/netfilter/ip_nat_ftp.ko

11.

#iptables -t nat –A POSTROUTING –o eth0 –j SNAT --to-source 192.168.3.127

12.

#iptables –t nat –A POSTROUTING –o eth0 –j MASQUERADE