User's Manual

Chapter 14 Firewall 155
The following table describes the labels in this screen.
Table 60 Security > Firewall > Default Action
LABEL DESCRIPTION
Packet Direction This is the direction of travel of packets (WA
N to LAN, LAN to WAN, WAN to Router,
LAN to Router).
Firewall rules are grouped based on the direction of travel of packets to which they apply.
Fo
r example, LAN to Router means packets traveling from a computer/subnet on the
LAN to the Device itself.
Default Action Use the drop-down list boxes to select the default action that the firewall is to take on
packets that are traveling in the selected direction and do not match any of the firewall
rules.
Select Dr
op to silently discard the packets without sending a TCP reset packet or an ICMP
destination-unreachable message to the sender.
Select Re
ject to deny the packets and send a TCP reset packet (for a TCP packet) or an
ICMP destination-unreachable message (for a UDP packet) to the sender.
Select Permit to al
low the passage of the packets.
Apply Click this to save your changes.
Cancel Click this to restore your pr
eviously saved settings.
14.4 Rules Screen
Click Security > Firewall > Rules to display the following screen. This screen displays a list of the
configured firewall rules. Note the order in which the rules are listed.
 The ordering of your rules is very important as rules are applied in turn.
Figure 101 Security > Firewall > Rules