Contents
FortiGate Version 4.0 Administration Guide
01-400-89802-20090424 7
http://docs.fortinet.com/ • Feedback
Configuring Networking Options............................................................................... 145
DNS Servers........................................................................................................... 146
Dead gateway detection ......................................................................................... 146
Web Proxy.................................................................................................................... 147
Routing table (Transparent Mode)............................................................................. 149
Transparent mode route settings............................................................................ 149
VLAN overview............................................................................................................ 150
FortiGate units and VLANs..................................................................................... 151
VLANs in NAT/Route mode........................................................................................ 151
Rules for VLAN IDs................................................................................................. 152
Rules for VLAN IP addresses................................................................................. 152
Adding VLAN subinterfaces.................................................................................... 153
VLANs in Transparent mode...................................................................................... 154
Rules for VLAN IDs................................................................................................. 156
Transparent mode virtual domains and VLANs...................................................... 156
Troubleshooting ARP Issues .................................................................................. 157
System Wireless................................................................................... 159
FortiWiFi wireless interfaces ..................................................................................... 159
Channel assignments................................................................................................. 160
IEEE 802.11a channel numbers............................................................................. 160
IEEE 802.11b channel numbers............................................................................. 160
IEEE 802.11g channel numbers............................................................................. 161
Wireless settings......................................................................................................... 162
Adding a wireless interface..................................................................................... 163
Wireless MAC Filter .................................................................................................... 165
Managing the MAC Filter list................................................................................... 166
Wireless Monitor ......................................................................................................... 167
Rogue AP detection.................................................................................................... 168
Viewing wireless access points .............................................................................. 168
System DHCP ....................................................................................... 171
FortiGate DHCP servers and relays .......................................................................... 171
Configuring DHCP services ....................................................................................... 172
Configuring an interface as a DHCP relay agent.................................................... 173
Configuring a DHCP server .................................................................................... 173
Viewing address leases.............................................................................................. 175
Reserving IP addresses for specific clients ............................................................ 175