TMS zl Management and Configuration Guide ST.1.1.100430

7-308
Virtual Private Networks
GRE Examples
If you want to disable the default OSPF policies and limit OSPF traffic to
specific IP address, you must configure policies that do the following:
■ Permit unicast and multicast OSPF messages to the remote gateway.
■ Permit unicast and multicast OSPF messages from the remote gateway.
To configure the necessary policies, complete the following steps:
1. In the left navigation bar of the Web browser interface, click Firewall >
Access Policies. You are at the Unicast tab.
2. Click Add a Policy. The Add Policy window is displayed.
3. Permit GRE messages to the remote gateway.
a. For Action, accept the default, Permit Traffic.
b. For From, select SELF.
c. For To, select EXTERNAL.
d. For Service, click Options and click Enter custom Protocol/Port. Then
select (47) GRE for Protocol.
e. For Source, specify the local IP address that acts as the tunnel gate-
way: 172.23.99.99.
f. For Destination, specify the remote module’s actual IP address:
192.168.33.22.
Figure 7-266. TMS zl Module—Add Policy Window