TMS zl Management and Configuration Guide ST.1.2.100916

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Virtual Private Networks
Configure a GRE Tunnel
9. Configure Authentication settings. These settings must match those on the
remote tunnel gateway exactly. Do one of the following:
•For Ty pe , select None.
•For Ty pe , select Simple.
i. For Password, type a password.
•For Ty pe , select MD5.
i. For Key ID, type the authentication key ID (1-255).
ii. For Key, type the 16-digit md5 key.
10. Click OK.
11. Click Save.
Move on to the next task: creating access policies.
Create Access Policies for a GRE Tunnel
Before you begin configuring firewall access policies, determine the zone on
which traffic from the remote tunnel gateway arrives. This is the zone associ-
ated with the TMS VLAN on which the tunnel’s local IP address is configured.
The instructions below will refer to this zone as the “remote zone.”
Also, determine the zone that you configured for the tunnel’s Firewall Zone
Association setting. The instructions below will refer to this zone as the “tunnel
zone.”
Finally, determine the zone for local endpoints that are allowed to send traffic
over the tunnel. The instructions below will refer to this zone as the “local
zone.”
Figure 7-167 shows these zones in the example figure for a GRE tunnel.