Filter Example
A filter for blocking the NetBIOS packets
The NETBIOS protocol is used to share a Microsoft comupter of a workgroup. For the security concern, the NetBIOS connection to a outside host is blocked by Prestige router as factory defaults. Users can remove the filter sets applied to menu 3.1 and menu 4.1 for activating the NetBIOS services. The details of the filter settings are described as follows.
The packets need to be blocked are as follows. Please configure two filter sets with 4 and 2 rules respectively based on the following packets in SMT menu 21.
Filter Set 1:
Filter Set 2:
Before starting to set the filter rules, please enter a name for each filter set in the 'Comments' field first.
Menu 21 - Filter Set Configuration
Filter
Filter
Enter Filter Set Number to Configure= 1 |
Configure the first filter set 'NetBIOS_WAN' by selecting the Filter Set number 1.
Menu 21.1.1 - TCP/IP Filter Rule
Filter #: 1,1 Press ENTER to Confirm or ESC to Cancel:
|
Menu 21.1.2 - TCP/IP Filter Rule
Filter #: 1,2
Press ENTER to Confirm or ESC to Cancel: |
Menu 21.1.3 - TCP/IP Filter Rule
Filter #: 1,3
Press ENTER to Confirm or ESC to Cancel:
|
Menu 21.1.4 - TCP/IP Filter Rule
Filter #: 1,4
Press ENTER to Confirm or ESC to Cancel: |
Menu 21.1.5 - TCP/IP Filter Rule
Filter #: 1,5
Press ENTER to Confirm or ESC to Cancel: |
Menu 21.1.6 - TCP/IP Filter Rule
Filter #: 1,6
Press ENTER to Confirm or ESC to Cancel:
|
Menu 21.2 - Filter Rules Summary # A
Type
Filter Rules M m n
|
Configure the second filter set 'NetBIOS_LAN' by selecting the Filter Set number 2.
Menu 21.2.1 - TCP/IP Filter Rule
Filter #: 2,1
Press ENTER to Confirm or ESC to Cancel: |
Menu 21.2.2 - TCP/IP Filter Rule
Filter #: 2,2
Press ENTER to Confirm or ESC to Cancel: |
Menu 21.2 - Filter Rules Summary # A
Type
Filter
Rules
M m n |
Menu 3.1 - General Ethernet Setup
Input Filter Sets:
|
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