2N 4G wireless router 2N SpeedRoute - User manual, 1898 v1.02 - Manual (Page 58)

Table of Programmable Parameters 3.2
58
Enable NAT
Enable/disable Network Address Translation(NAT).
Firewall > Port Forwarding
Used for routing packets coming from the Internet to specified ports, routed to
specified internal addresses and ports. The function is often designated as the
static NAT.
Input
Define the port to be forwarded. If a packet routed to this port comes to the
gateway, it is automatically forwarded to the destination specified in the Target
column.
Setting options: 0-65,535
Target
Define the target destination to which packets routed to specified ports are
forwarded. Obligatorily, the destination includes the IP address and the port.
Setting options: Valid IP address and port
Enable
Enable/disable port forwarding as defined in the table above the parameter.
Firewall > Port Filter
Used for restricting the gateway access in the LAN > WAN direction. If the
Firewall is active and the Port filter is enabled in this menu, the access through
the gateway is possible via selected ports only.
Protocol
Specify the protocol type for the packet to be filtered.
Setting options: TCP, UDP, Both
Port (Service)
Define the port to be used for the internal network – Internet communication. If
the selected port is associated with a service, the service is given in the
parentheses behind the port number, e.g. 23 (Telnet).
Setting options: 0-65,535
Enable
Enable/disable port filtering according to the rules defined above the parameter.
Firewall > Static route
Static route is used, when records in routing table shouldn’t be changed in running
device. They could be set by admin, usually according parameters given by
network manager. Static route can be used for workstations or for routing in small
networks with fixed IP address.