194 2 All contents copyright (c) 2006 ZyXEL Communications Corporation. ZyWALL 1050 Support Notes 3. Seamless Incorporation. 204 3. 1 Transparent Firewall. 204 3. 1 Bridge mode & Router (NAT) mode co-exist. 204 3. 2 NAT & Virtual Server. 209 3. 2 Zone-based IDP Protection. 213 3. 1 Applying Zone-Based IDP to ZyWALL 1050. 213 3. 3 Networking Partitioning Using VLAN. 223 3. 1 Creating VLAN virtual interfaces. 223 3. 2 Adding VLAN virtual interfaces to the Zone. 226 3. 3 Applying firewall policy to the Zone of VLANs. 229 3. 4 Connecting Multiple ISP Links. 233 3. 1 Multiple PPPoE links. 233 3. 2 Multiple fixed WAN links. 243 3. 5 Guaranteed Quality of Service. 261 3. 1 Priority & Bandwidth management. 261 FAQ...