User`s manual
UC-7101/7110/7112 Software User’s Manual Configuring UC-7101/7110/7112
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):
UC-7110
PC1 (Linux or Windows)
IP/Netmask:
Gateway:
192.168.3.100/24
192.168.3.127
PC2 (Linux or Windows)
IP/Netmask:
Gateway:
192.168.4.100/24
192.168.4.127
LAN1
LAN2
LAN1:eth0 192.168.3.127/24
LAN2:eth1 192.168.4.127/24
NAT Area / Private IP
1.
#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
or
12.
#iptables –t nat –A POSTROUTING –o eth0 –j MASQUERADE
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