Dell SonicWALL GX250 Manual page 90

2. Select Deny from the Action menu.
3. Select NNTP from the Service menu. If the service is not listed in the menu, you
need 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 Addr
Range Begin field.
6. Select WAN from the Destination Ethernet menu.
7. Enter * in the Destination Addr Range Begin field to block access to all NNTP
servers.
8. Select Apply this rule "from" to configure the time of enforcement.
9. Enter "8:30" and "17:30" in the hour fields.
10. Select Mon to Fri in the menu.
11. Click Update to add your new Rule.
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.
1. Click Add New Rule in the Rules window to launch the "Add Network
Access 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 Addr Range Be-
gin field and the ending IP address of the ISP network in the Source Addr Range
End field.
6. Select LAN from the Destination Ethernet menu.
7. Since the intent is to allow a ping only to the SonicWALL, enter the SonicWALL LAN
IP Address in the Destination Addr Range Begin field.
8. Select Apply this rule "always" to ensure continuous enforcement.
9. Click Update to add your new Rule.
Page 90 NETWORK ACCESS RULES