D-Link DES-1228/ME User Manual page 143

To establish the rule for a previously created Access Profile:
To edit or add a rule to a previously created profile, click the corresponding Add/Modify button under the Access Rule heading in
the Access Profile Table window, the following window will be displayed. If no entry exists only the Add button will be
displayed however when an entry already exists a corresponding Modify button will also be displayed.
To create a new rule set for an access profile click the Add button. A new window is displayed. To remove a previously created
rule, click the corresponding
DES-1228/ME Layer 2 Fast Ethernet Managed Switch
guidelines:
Select ICMP to instruct the Switch to examine the Internet Control Messages Protocol (ICMP)
field in each frame's header.
Select IGMP to instruct the Switch to examine the Internet Group Management Protocol
(IGMP) field in each frame's header.
Select TCP to use the TCP port number contained in an incoming packet as the forwarding
criterion. Selecting TCP requires that you specify a source port mask and/or a destination port
mask. The user may also identify which flag bits to deny. Flag bits are parts of a packet that
determine what to do with the packet. The user may deny packets by denying certain flag bits
within the packets, by checking the boxes corresponding to the flag bits of the TCP field. The
user may choose between urg (urgent), ack (acknowledgement), psh (push), rst (reset), syn
(synchronize), fin (finish).
•
src port mask - Specify a TCP port mask for the source port in hex form (hex 0x0-
0xffff), which you wish to deny.
•
dest port mask - Specify a TCP port mask for the destination port in hex form (hex
0x0-0xffff) which you wish to deny.
Select UDP to use the UDP port number contained in an incoming packet as the forwarding
criterion. Selecting UDP requires that you specify a source port mask and/or a destination port
mask.
•
src port mask - Specify a TCP port mask for the source port in hex form (hex 0x0-
0xffff).
•
dest port mask - Specify a TCP port mask for the destination port in hex form (hex
0x0-0xffff).
protocol id mask - Enter a value defining the protocol ID in the packet header to mask. Specify
in hex form (hex 0x0-0xf).
Figure 9- 4. Access Rule Table window
button.
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