Siemens SINAUT MD740-1 User Manual page 30

Configuration
Firewall # # # # Port Forwarding
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sender is informed of the refusal.
Reject means that data packets are not allowed to pass. They
are swallowed so that the sender is not informed of their
whereabouts.
Log:
For each individual firewall rule you can determine whether, when
the rule is applied,
- the event is to be logged - set Log to Yes
- or not - set Log to No (default setting)
Log entries for unknown connection attempts:
This logs all connection attempts which are not recorded by the
prevalent rules.
This lists the fixed rules for port forwarding.
With port forwarding the following takes place: the header of
incoming data packets from the external network which are
intended for the external IP address (or one of the external IP
addresses) of the SINAUT MD740-1 and for a particular port of the
SINAUT MD740-1 are rewritten in such a way that they are
forwarded to the internal network to a particular computer and to a
particular port of this computer. That means that the IP address
and port number in the headers of incoming data packets are
changed.
This method is also called Destination NAT.
!
The rules set here take priority over the settings under Firewall
# # # # Incoming.
Deleting a rule
Click on Delete next to the entry concerned. Then click on OK
or Apply.
Setting a new rule
SINAUT MD740-1