D-Link DES-6300 User Manual page 186

Modular L3 Ethernet Switch User's Guide
The SAP Circuit Filter Table displays the following parameters:
♦ Type – Defines whether the current filter entry works on traffic coming into or out of the
device.
♦ Network Address – The network pattern the filter entry affects. The network pattern works in
conjunction with the network mask to define the filter entry.
♦ Network Mask – Type in the letters F, 8, C, E, and 0 as many times as desired to indicate
which part of the network pattern is important. The mask must be continuous from left to right.
00000000 means all addresses, ffffffff means one address (no address range). A combination of f
0 indicates a specific range. This combination must have f on the left side, 0 on the right side,
and a single F, 8, C, or E, or 0 between them.
For example, if the network pattern is set to 12345678, set the network mask to ffff0000
to indicate that only the first four numbers of the network pattern are checked, and the
remaining numbers are irrelevant. In this example, only RIP messages with the numbers
1234 as their first four digits are affected.
♦ Service Type – Type in the type of server (in hex) the filter entry affects, such as file server or
print server. Value 0xFFFF applies for all types of service and is the default.
♦ Service Name – Type in the server name the filter entry affects. An asterisk (*) at the end of
the name as a wildcard, designating any number of characters.
For example, * indicates any server name, and sh* indicates any server name starting
with sh. The name may be up to 47 characters.
♦ Action – Defines whether the indicated packets are to be forwarded (permit) or blocked
(denied) when the current filter entry conditions are met. This parameter can be used to fine-
tune other filter entries. For example, a filter entry can be set to block all SAP messages with a
network pattern starting with 123, and set another filter entry to permit all SAP messages with a
network pattern starting with 1234. As a result, all SAP messages with a network pattern
starting with 123 that do not have 4 as the fourth digit are blocked.
The default is forward, but the default can be set by creating a general filter entry with
the network mask 00000000, and setting it to permit or deny.
To add a SAP Circuit filter:
1. Display the SAP Circuit Filter Table.
2. Click . The SAP Circuit Filter Insert window opens:
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