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SONICWALL SONICOS STANDARD 3.0 ADMINISTRATOR’S GUIDE
187
Firewall > Access Rules
Rule Examples
The following examples illustrate methods for creating Network Access Rules.
Blocking LAN Access for Specific Services
This example shows how to block LAN access to NNTP servers on the Internet during business
hours.
1
Click Add to launch the Add window.
2
Select Deny from the Action settings.
3
Select NNTP from the Service menu. If the service is not listed in the list, you must to add it in the
Add Service window.
4
Select LAN from the Source Ethernet menu.
5
Since all computers on the LAN are to be affected, enter * in the Source Address Range Begin
field.
6
Select WAN from the Destination Ethernet menu.
7
Enter * in the Destination Address Range Begin field to block access to all NNTP servers.
8
Click on the Options tab.
9
Select from the Apply this Rule list to configure the time of enforcement.
10
Enter 8:30 and 17:30 in the hour fields.
11
Select Mon to Fri from the menu.
12
Click OK.
Enabling Ping
By default, your SonicWALL does not respond to ping requests from the Internet. This Rule allows
ping requests from your ISP servers to your SonicWALL security appliance.
1
Click Add to launch the Add Rule window.
2
Select Allow from the Action menu.
3
Select Ping from the Service menu.
4
Select WAN from the Source Ethernet menu.
5
Enter the starting IP address of the ISP network in the Source Address Range Begin field and
the ending IP address of the ISP network in the Source Address Range End field.
6
Select LAN from the Destination Ethernet menu.
7
Since the intent is to allow a ping only to the SonicWALL security appliance, enter the SonicWALL
security appliance LAN IP Address in the Destination Address Range Begin field.
8
Click the Options tab.
9
Select Always from the Apply this Rule menu to ensure continuous enforcement.
10
Click OK.