User's Manual

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Protocol
This setting specifies the protocol to be matched. Via a drop-down menu, the
following protocols can be specified:
● TCP
● UDP
● ICMP
● IP
Alternatively, the Protocol Selection Tool drop-down menu can be used to
automatically fill in the protocol and port number of common Internet services
(e.g., HTTP, HTTPS, etc.)
After selecting an item from the Protocol Selection Tool drop-down menu, the
protocol and port number remains manually modifiable.
Source IP & Port
This specifies the source IP address(es) and port number(s) to be matched for the
firewall rule. A single address, or a network, can be specified as the Source IP &
Port setting, as indicated by the following screenshot:
In addition, a single port, or a range of ports, can be specified for the Source IP &
Port settings.
Destination IP &
Port
This specifies the destination IP address(es) and port number(s) to be matched for
the firewall rule. A single address, or a network, can be specified as the
Destination IP & Port setting, as indicated by the following screenshot:
In addition, a single port, or a range of ports, can be specified for the Destination
IP & Port settings.
Action
This setting specifies the action to be taken by the router upon encountering traffic
that matches the both of the following:
● Source IP & port
● Destination IP & port
With the value of Allow for the Action setting, the matching traffic passes through
the router (to be routed to the destination). If the value of the Action setting is set
to Deny, the matching traffic does not pass through the router (and is discarded).
Event Logging
This setting specifies whether or not to log matched firewall events. The logged
messages are shown on the page Status>Event Log. A sample message is as
follows:
Aug 13 23:47:44 Denied CONN=Ethernet WAN SRC=20.3.2.1
DST=192.168.1.20 LEN=48 PROTO=TCP SPT=2260 DPT=80
● CONN: The connection where the log entry refers to
● SRC: Source IP address