Configuring Firewall; Figure 52 Wan To Lan Traffic - Nortel BSR222 Configuration

176 Chapter 11 Firewall screens

Figure 52 WAN to LAN traffic

Configuring firewall

Click FIREWALL to open the Summary screen. Enable (or activate) the firewall
by selecting the Enable Firewall check box as seen in
The Business Secure Router applies the firewall rules in order, starting from the
first rule for a packet's direction of travel. When the traffic matches a rule, the
Business Secure Router takes the action in the rule and stops checking the firewall
rules.
For example, you have one general rule that blocks all LAN to WAN IRC
(Internet Relay Chat). And you have another rule that allows IRC traffic from
your company president's LAN IP address to go to the WAN. In order for the
president's IRC traffic to get through, the rule for the president's IP address must
come before the rule that blocks all LAN to WAN IRC traffic. If the rule that
blocks all LAN to WAN IRC traffic comes first, all LAN to WAN IRC traffic
matches that rule and the Business Secure Router drops the president's connection
and does not check any other firewall rules.
NN47922-500
Business Secure Router
Figure 53.