Wellink Corporation NEOBIT1014VA Manual Do Utilizador

3.  When you are done selecting criteria, ensure that the Enable 

radio button is selected at the top of the page, and then click 

. 

After a confirmation page displays, the IP Filter Configuration 
page will redisplay with the new rule showing in the table. 

If the security level of the rule matches the globally configured 
setting, a green ball in the Status column for that rule, indicating 
that the rule is now in effect. A red ball will display when the rule 
is disabled or if its security level is different from the globally 
configured level. 

4.  Ensure that the Security Level and Private/Public/DMZ 

Default Action settings on the IP Filter Configuration page 

are configured as needed, then click 

 

A page displays to confirm your changes.  

5.  Click the Admin tab, and then click 

 in the 

task bar. 

6. Click 

 to save your changes to permanent 

memory. 
 

Example 1. Blocking a specific computer on your LAN from using 
accessing web servers on the Internet: 

1.  Add a new rule for outgoing packets on the ppp-0 interface 

from any incoming interface (this would include the eth-0 and 
usb-0 interfaces, for example). 

2.  Specify a source IP address of the computer you want to 

block. 

3.  Specify the Protocol = TCP and enable the Store State 

setting.  

4.  Specify a destination port = 80, which is the well-known port 

number for web servers. 

5.  Enable the rule by clicking the radio button at the top of the 

page. 

6. Click 

 to create the rule. 

7.  On the IP Filter Configuration page, set the Security Level to 

the same level you chose for the rule, and set both the 
Private Default Action and the Public Default Action to 
Accept.  

8. Click 

, and commit your changes. 

Figure 58 on page 124 shows the configuration for this rule. The 
specified computer will not be able to access the Web, but will be 
able to access FTP Internet sites (and any others that use 
destination port numbers other than 80).