Quick Reference Guide

48 | Chapter 4: Firewall Protection and Content Filtering
ProSafe Dual WAN Gigabit Firewall with SSL & IPsec VPN FVS336Gv2 Reference Manual
Viewing the Rules
To view the firewall rules: Select Security > Firewall from the menu. The LAN WAN Rules
screen is displayed. The following figure shows some examples:
Order of Precedence for Rules
As you define new rules, they are added to the tables in the LAN WAN Rules screen as the
last item in the table, as shown in the previous example, Viewing the Rules. For any traffic
attempting to pass through the VPN firewall, the packet information is subjected to the rules
in the order shown in the Outbound Services and Inbound Services rules tables, beginning
at the top and proceeding to the bottom, before applying the default rule. In some cases, the
order of precedence of two or more rules may be important in determining the disposition of a
packet. For example, you should place the most strict rules at the top (those with the most
specific services or addresses). The Up and Down buttons allow you to relocate a defined
rule to a new position in the table.
Setting the Default Outbound Policy
The Default Outbound Policy is to allow all traffic to the Internet to pass through. Firewall
rules can then be applied to block specific types of traffic from going out from the LAN to the
Internet (Outbound). The default policy of Allow Always can be changed to block all outbound
traffic which then allows you to enable only specific services to pass through the VPN firewall.
To change the default outbound policy, follow these steps:
1. Go to the LAN WAN Rules screen, shown in the previous example, Viewing the Rules.
2. Change the Default Outbound Policy by selecting Block Always from the drop-down
list.
3. Click Apply.