Configuration manual

Appendix H NetBIOS filter commands 307
Nortel Business Secure Router 252 Configuration — Advanced
• 0 = LAN to WAN and WAN to LAN
• 3 = IPSec packet pass through
•4 = Trigger Dial
<on|off> is a switch to enable or disable the filter.
• For type 0, use on to enable the filter and block NetBIOS packets. Use off
to disable the filter and forward NetBIOS packets.
• For type 3, use on to block NetBIOS packets from being sent through a
VPN connection. Use off to allow NetBIOS packets to be sent through a
VPN connection.
• For type 4, use on to allow NetBIOS packets to initiate dial backup calls.
Use off to block NetBIOS packets from initiating dial backup calls.
Example commands
Command:
sys filter netbios config 0 on
This command blocks LAN to WAN and WAN to LAN NetBIOS packets
Command:
sys filter netbios config 1 off
This command forwards WAN to LAN and WAN to LAN NetBIOS packets
Command:
sys filter netbios config 3 on
This command blocks IPSec NetBIOS packets
Command:
sys filter netbios config 4 off
This command stops NetBIOS commands from initiating calls.