TMS zl Management and Configuration Guide ST.1.0.090213

4-86
Firewall
Port Triggers
Figure 4-59. Sample Network
The figure above shows the clients behind the firewall and two sets of clients
outside of the firewall. You want to permit connections only to and from the
two addresses (172.19.55.0/24 and 172.23.11.0/24) on the Internet.
To configure this example, you will need a port trigger to permit connections
to be initiated from either side of the firewall, and firewall access policies to
limit the connections to the two addresses.
To perform this task, follow these steps:
1. Select Firewall > Port Triggers > Policies.
2. Click Add a port trigger.
3. In the Policy Name field, type VoIP.
4. From the Source list, select Any.
5. For Protocol/Ports, select Options and select Enter custom Protocol/Ports.
a. Select TCP.
b. Type 1584 and 1585.
6. Under Allow Inbound Connections to Source, do the following:
•Select TCP and type 51200 and 51210 in the Ports fields.
•Select TCP and then type 51210 in the Ports field.