Industry Cellular Gateway
5.1.1 IPSec
Internet Protocol Security (IPSec) is a protocol suite for securing Internet Protocol (IP) communications by
authenticating and encrypting each IP packet of a communication session. IPSec includes protocols for
establishing mutual authentication between agents at the beginning of the session and negotiation of
cryptographic keys to be used during the session.
An IPSec VPN tunnel is established between IPSec client and server. Sometimes, we call the IPSec VPN client as
the initiator and the IPSec VPN server as the responder. This gateway can be configured as different roles and
establish number of tunnels with various remote devices. Before going to setup the VPN connections, you may
need to decide the scenario type for the tunneling.
IPSec Tunnel Scenario
s
To build IPSec tunnel, you need to fill in
remote gateway global IP, and optional
subnet if the hosts behind IPSec peer
can access to remote site or hosts.
Under such configuration, there are
four scenarios:
Site to Site:
You need to setup remote
gateway IP and subnet of both
gateways. After the IPSec tunnel
established, hosts behind both
gateways can communication each
other through the tunnel.
Site to Host:
Site to Host is suitable for tunneling between clients in a subnet and an application server (host).
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