D-Link xStack DGS-3400 Series, User Manual

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xStack DGS-3400 Series Layer 2 Gigabit Ethernet Managed Switch
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specified. The user may also identify which flag bits to filter. Flag bits are parts of a packet
that determine what to do with the packet. The user may filter packets by filtering 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 filter.
dst port mask - Specify a TCP port mask for the destination port in hex form (hex
0x0-0xffff) which you wish to filter.
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 UDP port mask for the source port in hex form (hex 0x0-
0xffff).
dst port mask - Specify a UDP port mask for the destination port in hex form (hex
0x0-0xffff).
Protocol id - Enter a value defining the protocol ID in the packet header to mask. Specify the
protocol ID mask in hex form (hex 0x0-0xff).
Click Apply to set this entry in the Switch’s memory.
To view the settings of a previously correctly created profile, click in the Access Profile Table to view the following screen:
Figure 8- 23.CPU Interface Filtering Entry Display for IP
The page shown below is the Packet Content Mask configuration window.