Microhard Systems IPN4G - Appendix F: GRE Example

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Appendix F: GRE Example
The following pages outline the different GRE configurations available for the IPn4G. This may be useful in
determining which fields are populated by showing a working example. Three different setups are shown:
General GRE (without IPsec), GRE over IPsec (Transport Mode) and GRE over IPsec (Tunnel Mode).
Appendix F Image 1: Network Configuration Example Topology
Prerequisites:
1. Firewall > General > WAN Request Allow (Not Recommened), OR add a specific firewall rules
(Recommened)
2. Add a route on PC-1: ip route add 192.168.169.0/24 via 192.168.168.1 dev eth0
Add a route on PC-2: ip route add 192.168.168.0/24 via 192.168.169.1 dev eth0
Example 1: General GRE (without IPsec)