Proroute GEM420 4G M2M Router
GEM420 User Manual
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Interface: Select “WAN-1”.
Group: Select “IP” and enter IP range: 192.168.75.10 ~ 40.
Service: Select “ALL”.
Resource: Select “Connection Sessions”.
Control Function: Select “Set Session Limitation”, and set session number to
20000.
QoS Direction: Select “Outbound” for outbound traffic only. It is for the client
devices under the gateway to establish multiple sessions with servers in the
Internet.
Sharing Method: Select “Group Control”.
Schedule: Leave the default value of “(0) Always” as it is.
This rule defines that all client hosts, whose IP address is in the range of
192.168.75.10~40, can access to the Internet and keep a maximum 20000
connection sessions totally at any time.
3.2.3 VPN Setup
A virtual private network (VPN) extends a private network across a public network, such
as the Internet. It enables a computer to send and receive data across shared or public
networks as if it were directly connected to the private network, while benefitting from the
functionality, security and management policies of the private network. This is done by
establishing a virtual point-to-point connection through the use of dedicated connections,
encryption, or a combination of the two. The tunnel technology supports data
confidentiality, data origin authentication and data integrity of network information by
utilizing encapsulation protocols, encryption algorithms, and hashing algorithms.
The product series supports following tunneling technologies to establish secure tunnels
between multiple sites for data transferring, including IPSec, PPTP, L2TP (over IPSec)
and GRE. Advanced functions include Full Tunnel, Tunnel Failover, Tunnel Load Balance,