PointRed Telecom Ltd. MCRD-2458 Manuale Utente

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To add a new rule entry 
1.

Select the Rules tab 

2.

Click the Entries Commands 

 button. The Insert New Rule dialog 

appears.

3.

In the Source Address boxes, type the address of the source network or 
source host. 

4.

In the Source Address Subnet boxes, type the netmask for the source net. 
Type 255.255.255.255 for a host source. 

5.

In the Destination Address boxes, type the destination network or 
destination host. 

6.

In the Destination Address Subnet boxes, type the netmask for the 
destination net. Type 255.255.255.255 for a host destination. 

7.

In the Interface drop down list, select the interface that packets are 
received from. The interface can be one of the available physical interfaces or 
can be set to All.

8.

In the Action drop down list, select one of the following: 
(i) LookUp to cause the routing subsystem to look up the routing table 

selected in the Table drop down list. (Default: Main table) 

(ii) Unreachable  to  drop  the  received  packet  and  send  an  ICMP  packet  to 

the source indicating the destination was unreachable. 

(iii) Drop to silently drop packets with matching frames. 

9.

In the Table drop down list, select the routing table you wish to use with the 
LookUp option described above. 

In the example screenshot above the rule specifies that the system will silently drop 
packets originated from the network space 10.10.10.0/ 24 arriving in any interface.

To remove a specific rule entry, select the table row of that entry, then click the 

Entries Commands  

button. 

To edit a specific rule entry, select the table row of that entry, and then click 

 button. The Insert New Rule dialog appears with the fields for the 

selected rule filled in. Modify as required, and then click Submit.

Rule entries allocated in each routing table are parsed by the OS kernel in a 
serial manner. To modify the series (priority) of allocated entries, select the table 

row of the entry to be moved, and then click the Entries Commands

button to move the entry upward or the 

 button to move it downward in 

the list.