Figure 92 Security > Firewall > Default Rule (Bridge Mode); Table 40 Security > Firewall > Default Rule (Bridge Mode) - ZyXEL Communications ZYWALL P1 User Manual

Figure 92 SECURITY > FIREWALL > Default Rule (Bridge Mode)
The following table describes the labels in this screen.
Table 40 SECURITY > FIREWALL > Default Rule (Bridge Mode)
LABEL
Enable Firewall
From, To
Log
ZyWALL P1 User's Guide
DESCRIPTION
Select this check box to activate the firewall. The ZyWALL performs access control
and protects against Denial of Service (DoS) attacks when the firewall is activated.
Set the firewall's default actions based on the direction of travel of packets. Here are
some example descriptions of the directions of travel.
From LAN To LAN means packets traveling from a computer on one LAN subnet to
a computer on another LAN subnet on the LAN interface of the ZyWALL or the
ZyWALL itself. The ZyWALL does not apply the firewall to packets traveling from a
LAN computer to another LAN computer on the same subnet.
From VPN means traffic that came into the ZyWALL through the VPN tunnel and is
going to the selected "to" interface. For example, From VPN To LAN specifies the
VPN traffic that is going to the LAN. The ZyWALL applies the firewall to the traffic
after decrypting it.
To VPN is traffic that comes in through the selected "from" interface and goes out
through the VPN tunnel. For example, From LAN To VPN specifies the traffic that is
coming from the LAN and going out through the VPN tunnel. The ZyWALL applies
the firewall to the traffic before encrypting it.
From VPN To VPN means traffic that comes in through the VPN tunnel and
terminates at the ZyWALL. This is the case if you allow someone to use a service
(like Telnet or HTTP) through the VPN tunnel to manage the ZyWALL. The ZyWALL
applies the firewall to the traffic after decrypting it.
Note: The VPN connection directions apply to the traffic going to or
from the ZyWALL's VPN tunnel. They do not apply to other
VPN traffic for which the ZyWALL is not one of the gateways
(VPN pass-through traffic).
Here are the default actions from which you can select.
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.
Select this to create a log when the above action is taken.
Chapter 9 Firewall
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