Proroute
GEM
2M
4G
Router
GEM-2M series User Manual
101
Business Security Gateway
can go to access Internet via remote PPTP server.
By default, it is enabled. However, if you want the remote PPTP
Server to
monitor the Intranet of local Business Security Gateway, the option can’t be
enabled.
11.
LCP Echo Type:
Choose the way to do connection keep alive. By default, it is
“Auto” option that means system will automatically decide the time interval
between two LCP echo requests and the times that system can retry once
system LCP echo fails. You also can choose “User-defined” option to define the
time interval and the retry times by yourself. The last option is “Disable”.
12.
Tunnel:
Check the “Enable” box to activate the tunnel.
3.2.3.5 GRE
Generic Routing Encapsulation (GRE) is a tunneling protocol developed by Cisco
Systems that can encapsulate a wide variety of network layer protocols inside virtual
point-to-point links over an Internet Protocol internetwork.
3.2.3.5.1 GRE VPN Tunnel Scenario
There is one common GRE VPN connection scenario as follows:
GRE Server / Client Application
The Business Security Gateway acts as GRE Server or Client role in SMB
Headquarters or Branch Office.
3.2.3.5.2 GRE Configuration
