SAGEMCOM F@ST 2804v2 Reference Manual page 85

A few rules for entering values:
When you want to select a single port, the start port ("Trigger Port Start" or "Open
Port Start") and the end port ("Trigger Port End" or "Open Port End") must be
identical.
When you want to select a range of ports, the start port number must be lower than
the end port number.
The following diagram contains an example:
Using the "Trigger" 3568 port (WAN side), the "Delta Force" service server triggers the opening
of port range 3100 to 3999 for your computer to access this service.
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5 - Information / Configuration
F@st™ 2804v2 Reference Manual - 253329475-A
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