Appendix 3 Hard-coded packet filter for "NetBIOS over TCP/IP" (NBT)
The new set C/I commands is under "sys filter netbios" sub-command. Default values
of any direction are “Forward”, and trigger dial is “Disabled”.
There are two CI commands:
(1) "sys filter netbios disp": It will display the current filter mode.
Example ouput:
=============== NetBIOS Filter Status ===============
LAN to WAN: Block
WAN to LAN: Forward
IPSec Packets: Forward
Trigger Dial: Disabled
(2) "sys filter netbios config <type> {on|off}": To configure the filter mode for each
type.
Current filter types and their description are:
Type Description Default mode
0 LAN to WAN Forward
1 WAN to LAN Forward
6 IPSec pass through Forward
7 Trigger dial Disabled
Example commands:
sys filter netbios config 0 on => block LAN to WAN NBT packets
sys filter netbios config 1 on => block WAN to LAN NBT packets
sys filter netbios config 6 on => block IPSec NBT packets
sys filter netbios config 7 off => disable trigger dail
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