4.
Web Management
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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
10.0.75.16~31, can access to the Internet and keep a maximum 20000
connection sessions totally at any time.
4.2.3 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, NetBIOS over IPSec, NAT Traversal and Dynamic VPN.
4.2.3.1 Configuration
To enable the VPN function, you should go to Configuration before any setting.
4.2.3.2 IPSec
Internet Protocol Security (IPSec) is a protocol suite for securing Internet Protocol (IP)