Planex 14VG-BT user manual download (Page 92 of 311)

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92
10. The addition of new service is now complete.
5.3.3 Filter Rule Example
As an example of packet filter, this section provides the procedure to block communication
between WAN and ports 137 to 139 of LAN (used in NetBIOS, etc).
NetBIOS packets
used in Windows® LAN occasionally result in unexpected communication to the Internet.
Blocking ports 137-139 used by NetBIOS prevents the occurrence of such unexpected
communication.
Direction
Operation
Protocol
Source IP
Address
Destination
IP Address
Source
Ports
Destination
Ports
LAN
Ethernet
->
Receive
Drop
TCP/UDP
Any
Any
Any
137-139
Send ->
WAN
Ethernet
Drop
TCP/UDP
Any
Any
Any
137-139
1. Click on the [Security] icon on the side bar.
2. Click on the [Advanced Filtering] tab.
Click
Sample
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