User's Manual

5. Setup and Status Display
NZ2WL - xxx
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Protocol Filter
When this is "Enable" and a filter is registered, specific protocol (such as TCP and UDP) packets can be
blocked or allowed.
To edit a filter, click the "Edit List" button to open the window for setting the protocol filter list, and
then edit the filter. Set the following settings in the window for setting the protocol filter list, and then
click the "Add" button to register the filter to the list.
Table 5.7. Protocol filter setting
Setting Item Setting Method
Operation Select whether to allow or block specified packets.
Ethernet type
Specify the Ethernet frame type to "IP (0x0800)", "ARP (0x0806)", "RARP (0x8035)" or “802.3 (0x0 to 0x05DC)”,
or specify a user-defined type other than an IEEE 802.3 Length Field.
When specifying a user-defined value, enter a value between 0x05dd and 0xffff (1501 to 65535). When
registering a hexadecimal value, start with "0x". When registering a decimal value, enter the value as is.
You can define only one individual value and one range.
IP protocol
Enter this when "IP" is selected as the Ethernet type.
You can specify the protocol number included in the IP header. You can specify "All (0 -
255)", "TCP (6)", "UDP
(17)" or "ICMP (1)" or specify a user-defined protocol number.
When specifying a user-defined va
lue, enter a value between 0 and 255 (0x0 to 0xff). When registering a decimal
value, enter the value as is. When registering a hexadecimal value, start with "0x".
You can define only one individual value and one range.
Port number
Enter this when "TCP" or "UDP" is selected as the IP protocol.
You can specify the TCP or UDP port number. Specify "All (0 - 65535)" or "User defined".
When specifying a user-
defined value, enter a value between 0 and 65535 (0x0 to 0xffff). When registering a
decimal value, enter the value as is. When registering a hexadecimal value, start with "0x".
You can define only one individual value and one range.
The registered filter is displayed in the table below the input form.
To delete a registered filter, click the "Delete" button for that filter. Clicking the "All" button on the
table deletes all filters.
Specify "Allow" or "Block" for the action of protocols whose action has not been specified in the
protocol filter list. When specifying "Block", be sure to register those protocols that are required for use
of this product to the filter as "Allow". Note that communication to this product is allowed even if
"Block" is specified, so the setting can be changed later.
Factory default setting
:
Function … Disable
Operation of unspecified protocols … Allow