EW50 Industrial LTE Cellular Gateway
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5.1.3 L2TP
Layer 2 Tunneling Protocol (L2TP) is a tunneling protocol used to support virtual private networks (VPNs) or as
part of the delivery of services by ISPs. It does not provide any encryption or confidentiality by itself. Rather, it
relies on an encryption protocol that it passes within the tunnel to provide privacy. This Gateway can behave
as an L2TP server and an L2TP client both at the same time.
L2TP Server:
It must have a static IP or a FQDN for clients to create L2TP tunnels. It also maintains “User
Account list” (user name/ password) for client login authentication; There is a virtual IP pool to assign virtual IP
to each connected L2TP client.
L2TP Client
: It can be mobile users or gateways in remote offices with dynamic IP. To set up a tunnel, add
“user name”, “password” and server’s global IP. In addition, identify the operation mode for each tunnel as
main connection, failover for another tunnel, or load balance tunnel to increase overall bandwidth. Select
“Default Gateway” or “Remote Subnet” for packet flow. You can also define what kind of traffic will pass
through the L2TP tunnel in the “Default Gateway / Remote Subnet” parameter.