Chapter 14 Firewall
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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 (
WAN 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.
For 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
Drop
to silently discard the packets without sending a TCP reset packet or an ICMP
destination-unreachable message to the sender.
Select
Reject
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 allow the passage of the packets.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously 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
