Gre Tunnel - Teltonika RUT240 User Manual

8.4.3 GRE Tunnel

GRE (Generic Routing Encapsulation RFC2784) is a solution for tunneling RFC1812 private address-space traffic
over an intermediate TCP/IP network such as the Internet. GRE tunneling does not use encryption it simply encapsulates
data and sends it over the WAN.
In the example network diagram two distant networks LAN1 and LAN2 are connected.
To create GRE tunnel the user must know the following parameters:
1. Source and destination IP addresses.
2. Tunnel local IP address
3. Distant network IP address and Subnet mask.
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