ZyXEL Communications P-334W - Manual (Page 183)

Prestige 334W User’s Guide
Firewall 13-5
13.3 The Firewall, NAT and Remote Management
Figure 13-2 Firewall Rule Directions
13.3.1 LAN-to-WAN rules
LAN-to-WAN rules are local network to Internet firewall rules. The default is to forward all traffic from
your local network to the Internet.
How can you block certain LAN to WAN traffic?
You may choose to block certain LAN-to-WAN traffic in the Services screen (click the Services tab). All
services displayed in the Blocked Services list box are LAN-to-WAN firewall rules that block those
services originating from the LAN.
Blocked LAN-to-WAN packets are considered alerts. Alerts are “higher priority logs” that include system
errors, attacks and attempted access to blocked web sites. Alerts appear in red in the View Log screen. You
may choose to have alerts e-mailed immediately in the Log Settings screen.
LAN-to-LAN/Prestige means the LAN to the Prestige LAN interface. This is always allowed, as this is how
you manage the Prestige from your local computer.
13.3.2 WAN-to-LAN rules
WAN-to-LAN rules are Internet to your local network firewall rules. The default is to block all traffic from
the Internet to your local network.