Black Box LES110BA, LES1332A, LES1408A, LES144BA, LES1416A, LES1348A, LES1432A Firewall & Forwarding

5.8Firewall & Forwarding

The console server has routing, NAT, packet filtering and port forwarding support on all physical and virtual network interfaces.

This enables the console server to function as an Internet or external network gateway:

−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). So 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/cellular router and be redirected to a specified internal address for a device on the internal network.

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