Welltech WG2504 FXS V.4.02 - Manual (Page 31)

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3-8 Port Filter
Figure 3-8 Port Filter
 Port Filter: enable port Filter or not.
 Port Range: Starting and stopping port to be forward. If you are
using only 1 port, please set the starting equal to stopping port.
 Protocol: TCP, UDP or both are used for port blocked.
3-9 Port Fwd
The wellgate 2504 support port forward feature as below
Figure 3-9 Port Fwd
 Port Fwd: enable port forward feature or not
 Port Range: Starting and stopping port to be forward. If you are
using only 1 port, please set the starting equal to stopping port.