GRE tunnelling
The Generic Route Encapsulation (GRE) protocol is used in addition to Point-to-Point Tunnelling Protocol (PPTP) to create VPNs
(virtual private networks) between clients and servers or between clients only. Once a PPTP control session establishes the VPN
tunnel GRE is used to securely encapsulate the data or payload.
Configuring GRE tunnelling
To configure GRE tunnelling:
From the menu bar at the top of the screen, click Networking and then from the VPN section on the left side of the screen,
click GRE. The GRE client list is displayed.
Figure 85 - GRE client list
Click the +Add button to begin configuring a new GRE tunnelling client profile. The GRE Client Edit screen is displayed.
Figure 86 – GRE client edit
Click the Enable GRE Tunnel toggle key to switch it to the ON position.
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