System information

1. CONFIGURATION OVER WEB BROWSER
Continued from previous page
Item Description
Target Port The port number on which access to the router is allowed
Action Type of action:
• allow – access is allowed
• deny – access is denied
Table 30: Filtering of incoming packets
The following part of the configuration form defines the forwarding policy. If Enabled filter-
ing of forwarded packets item is not checked, packets are automatically accepted. If this item
is checked and incoming packet is addressed to another network interface, it will go to the
FORWARD chain. In case that the FORWARD chain accepted this packet (there is a rule for
its forwarding), it will be sent out. If the forwarding rule does not exist, packet will be dropped.
Then there is a table for defining the rules. It is possible to allow all traffic within the
selected protocol (rule specifies only protocol) or create stricter rules by specifying items for
source IP address, destination IP address and port.
Položka Popis
Source IP address of source device
Destination IP address of destination device
Protocol Specifies protocol for remote access:
• all – access is enabled for all protocols
• TCP – access is enabled for TCP protocol
• UDP – access is enabled for UDP protocol
• ICMP – access is enabled for ICMP protocol
Target Port The port number on which access to the router is allowed
Action Type of action:
• allow – access is allowed
• deny – access is denied
Table 31: Forwarding filtering
There is also the possibility to drop a packet whenever request for service which is not in
the router comes (check box named Enable filtering of locally destinated packets). The packet
is dropped automatically without any information.
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