Firewall Protection
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ProSafe Wireless-N 8-Port Gigabit VPN Firewall FVS318N
Note: Some residential broadband ISP accounts do not allow you to run
any server processes (such as a web or FTP server) from your
location. Your ISP might periodically check for servers and might
suspend your account if it discovers any active servers at your
location. If you are unsure, see the acceptable use policy of your
ISP.
Order of Precedence for Rules
As you define a new rule, it is added to a table in a Rules screen as the last item in the list, as
shown in the following figure, which shows the LAN WAN Rules screen for IPv4 as an
example:
Figure 60.
For any traffic attempting to pass through the firewall, the packet information is subjected to
the rules in the order shown in the Rules table, beginning at the top and proceeding to the
bottom. In some cases, the order of precedence of two or more rules might 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 table buttons
in the Action column allow you to relocate a defined rule to a new position in the table.