USER MANUAL
GWR Router Series
68
GRE Tunnel configuration between two GWR Routers
GRE tunnel is a type of a VPN tunnel, but it isn't a secure tunneling method. Simple network with
two GWR Routers is illustrated on the diagram below (Figure 49). Idea is to create GRE tunnel for LAN to
LAN (site to site) connectivity.
Figure 49 - GRE tunnel between two GWR Routers
The GWR Routers requirements:
•
Static IP WAN address for tunnel source and tunnel destination address;
•
Source tunnel address should have static WAN IP address;
•
Destination tunnel address should have static WAN IP address;
GSM/UMTS APN Type:
For GSM/UMTS networks GWR Router connections may require a Custom
APN. A Custom APN allows for various IP addressing options, particularly static IP addresses, which are
needed for most VPN connections. A custom APN should also support mobile terminated data that may be
required in most site-to-site VPNs.
The GWR Router 1 configuration:
•
Click
Network
Tab, to open the
LAN NETWORK
screen. Use this screen to configure LAN TCP/IP
settings. Configure IP address and Netmask.
-
IP Address: 192.168.4.1
-
Subnet Mask: 255.255.255.0
-
Press
Save
to accept the changes.
Figure 50 - Network configuration page for GWR Router 1
•
Use SIM card with a static IP address, obtained from Mobile Operator. (Note the default gateway
may show, or change to, an address such as 10.0.0.1; this is normal as it is the GSM/UMTS
provider’s network default gateway).
•
Click
WAN Settings
Tab to configure parameters necessary for GSM/UMTS connection. All
parameters necessary for connection configuration should be required from mobile operator.
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