VEGA MoRoS GPRS 1.3 - Manual (Page 53)

MoRoS GPRS 1.3 Functions
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page 35, above, position 11). As an alternative, you may also exclude certain IP
addresses by entering the IP address in the fields at "These computers may
not initiate a connection". Analogously, you may allow or forbid connections
to certain IP addresses.
Save the settings, by clicking "OK" (Figure 14, Page 35, above, Position 10).
12.6 Port Forwarding
12.6.1 Creating a Port Forwarding Rule
When including the Internet as communication network, private and public IPs are dis-
tinguished. To be able to access the private IP addresses from the Internet, which are
mostly used in local networks, the technologies NAT and port forwarding are used. In the
Internet, only the public IP address of the MoRoS GPRS 1.3 can be reached. This IP address
can be used to also access the local end terminals in the network of the MoRoS GPRS 1.3
from the Internet, if NAT and port forwarding are used.
The MoRoS GPRS 1.3 allows port forwarding. The MoRoS GPRS 1.3 routes incoming pack-
ets from outside of the network to certain computers within the network. Outgoing
packets of these connections from the network are being routed back to their destina-
tions outside of the network. At certain ports, the MoRoS GPRS 1.3 routes incoming data
packets to one port of a certain destination address. You can use rules to define which
packets from the outside are routed to which addresses and ports in the network. This
means that you can make certain services available to computers in the network, using
the phone network.
Configuration with the web interface
To activate port forwarding, mark the checkbox "Port forwarding" in the
menu "Dial-out" (Figure 15, page 36 above, position 2).
To create a forwarding rule, select the protocol (TCP or UDP) and the port
range for the incoming packets at the MoRoS GPRS 1.3. Enter an IP address for
the routing destination in the entry field "To IP address" and a port in the en-
try field "To port"; this is the address and the port where the packets are
routed to.
To delete an already created rule, activate the check box "Delete" (Figure 15,
page 36 above, position 6) and then click on "OK" (Figure 15, page 36 above,
position 5).
To deactivate an already created rule, deactivate the check box "Active"
(Figure 15, page 36 above, position 6) and then click on "OK" (Figure 15, page
36 above, position 5).
The rules in the list are processed from top to bottom. If two rules contradict
each other (for example, the same port is used twice), only the rule which is
further up in the list will be processed.