Moxa Technologies UC-7110 user manual Configuring Dial-in/Dial-out Service, Enabling NAT at Bootup

UC-7110 Series User’s Manual Configuring UC-7110

the module ipt_MASQUERADE):

IP/Netmask: 192.168.3.100/24

Gateway: 192.168.3.127

PC1 (Linux or Windows)

LAN1

LAN1:eth0 192.168.3.127/24

UC-7110

LAN2:eth1 192.168.4.127/24

LAN2

PC2 (Linux or Windows)

IP/Netmask: 192.168.4.100/24

Gateway: 192.168.4.127

NAT Area / Private IP

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

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

or

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

Enabling NAT at Bootup

In most real world situations, you should use a simple shell script to enable NAT when UC-7110 boots up, as indicated below:

1.setting iptables

2.iptables-save > /home/xxx.file (xxx.file is the user defined file name)

3.vi /etc/rc

4.	Append	echo 1 > /proc/sys/net/ipv4/ip_forward
5.	Append	iptables-resotre /home/xxx.file (xxx.file is the user defined file name)

Configuring Dial-in/Dial-out Service

Dial-out Service

Direct cable connection:

yWithout username and password, use:

/>pppd connect ‘chat –v’ /dev/ttyM0 38400 crtscts&

yWith username and password, use:

/>pppd connect ‘chat –v’ user xxxxx password xxxxx /dev/ttyM0 38400 crtscts&

Connect Using a Modem:

yUse:

/>pppd connect ‘chat –v ATDT<phone_number> CONNECT’ user xxxxx password xxxxx /dev/ttyM0 38400 crtscts&

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