Digi TX54 User Manual page 535

Virtual Private Networks (VPN)
The home agent's authentication key. This is provided by your cellular carrier.
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Home agent registration lifetime. This is provided by your cellular carrier.
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The local network interfaces that will be advertised on NEMO.
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Additional configuration items
The home agent Software Parameter Index (SPI).
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Path MTU discovery.
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Path MTU discovery is enabled by default. If it is disabled, identify the MTU.
Care of address: the local network interface that is used to communicate with the peer.
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If set to Interface, identify the local interface to be used. Generally, this will be the
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Wirelesss WAN (WWAN1 or, for dual cellular models, WWAN2).
If set to IP address, enter the IP address.
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The local network of the GRE endpoint negotiated by NEMO.
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If the local network is set to Interface, identify the local interface to be used.
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
WebUI
1. Log into the TX54 WebUI as a user with full Admin access rights.
2. On the menu, click System. Under Configuration, click Device Configuration.
The Configuration window is displayed.
3. Click VPN > NEMO.
The NEMO tunnel is enabled by default. To disable, click to toggle off Enable.
4. For Home IP address, type the IPv4 address of the NEMO virtual network interface.
5. For Zone, select Internal.
The Internal firewall zone configures the TX54 device to trust traffic going to the tunnel and
allows it through the network.
6. For Home agent server IP address, type the IPv4 address of the NEMO home agent. This is
provided by your cellular carrier.
TX54 User Guide
NEMO
535