Reference Guide for the Model RT328 and Model RH348 ISDN Routers
3.Set “Active” to Yes, and specify the IP Protocol as 17, which is the UDP protocol number (in decimal) from the Assigned Numbers RFC as described on page
4.Specify Source Port #137, NetBIOS Naming Service, and set the Port # Comparison field to look for port numbers “equal” to 137.
For packets that match this comparison, you want to drop the packet, so set Action Matched to “Drop.” For packets not matching, you want to continue to the next rule, so set Action Not Matched to “Check Next Rule.”
Figure
Menu 21.1.1 - TCP/IP Filter Rule
Filter #: 1,1
Filter Type= TCP/IP Filter Rule
Active= Yes |
|
|
IP Protocol= | 17 | IP Source Route= No |
Destination: IP | Addr= 0.0.0.0 | |
| IP | Mask= 0.0.0.0 |
| Port #= 0 | |
| Port # Comp= None | |
Source: IP | Addr= 0.0.0.0 | |
| IP | Mask= 0.0.0.0 |
| Port #= 137 | |
| Port # Comp= Equal | |
TCP Estab= N/A |
| |
More= No |
| Log= None |
Action Matched= | Drop | |
Action Not Matched= Check Next Rule
Press ENTER to Confirm or ESC to Cancel:
Figure
Filter Configuration |