User Manual
This enables the console server to function as an Internet or external network gateway, via cellular connections
or via other Ethernet networks on two Ethernet port models:
• Network Forwarding allows the network packets on one network interface (i.e. LAN1 / eth0) to be
forwarded to another network interface (i.e. LAN2/eth1 or dial-out/cellular). Locally networked
devices can IP connect through the console server to devices on remote networks
• IP Masquerading is used to allow all the devices on your local private network to hide behind and
share the one public IP address when connecting to a public network. This type of translation is
only used for connections originating within the private network destined for the outside public
network, and each outbound connection is maintained by using a different source IP port number
• When using IP Masquerading, devices on the external network cannot initiate connections to
devices on the internal network. Port Forwards allows external users to connect to a specific port
on the external interface of the console server and be redirected to a specified internal address
for a device on the internal network
• With Firewall Rules, packet filtering inspects each packet passing through the firewall and
accepts or rejects it based on user-defined rules
• Then Service Access Rules can be set for connecting to the console server/router
4.8.1 Configuring network forwarding and IP masquerading
To use a console server as an Internet or external network gateway requires establishing an external
network connection and setting up forwarding and masquerading.
NOTE Network forwarding allows the network packets on one network interface (i.e. LAN1 / eth0) to be
forwarded to another network interface (i.e. LAN2/eth1 or dial-out/cellular). Locally networked
devices can IP connect through the console server to devices on a remote network. IP
masquerading is used to allow all the devices on your local private network to hide behind and
share the one public IP address when connecting to a public network. This type of translation is
only used for connections originating within the private network destined for the outside public
network, and each outbound connection is maintained by using a different source IP port number.
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