8Ubiquiti Networks, Inc.Chapter 3: AirOS™AirRouter User GuidePort ForwardLists active port forward entries in the PORTFORWARDchain of the standard iptables nat table, while the device isoperating in Router mode.The list can be refreshed using the Refresh button. Portforwarding is enabled and configured on the Network tab.Port forwarding allows you to connect to a specific servicesuch as an FTP server or Web server. Port Forwardingcreates a transparent tunnel through a firewall/NAT,granting access from the WAN side to the particularnetwork service running on the LAN side.DHCP leasesShows the current status of the leased IP addresses bythe device’s DHCP server. This option is available if DHCPServer is enabled while the device is operating in Routermode.MAC Address Displays the client’s MAC address, which isconnected to the Access Point.IP Address Displays the client’s IP address leased by thedevice’s DHCP server.Remaining Lease Time Shows for how long the leasedIP address will be valid and reserved for particular DHCPclient.Hostname Displays the device name (hostname) of theclient receiving an IP lease.Interface Name Displays the interface to which thespecific MAC address is connected.The list can be updated using the Refresh button.More information is provided in the Wireless section.LogWhen logging is enabled (Services > System Log > EnableLog) this option lists all registered system events. Bydefault, logging isn’t enabled.Clear Deletes all entries in the system log.Refresh The System Log content is updated.WirelessThe Wireless Page contains everything needed by theoperator to setup the wireless part of the link. Thisincludes regulatory requirements, SSID, channel andfrequency settings, device mode, data rates, and wirelesssecurity.Basic Wireless SettingsThe general wireless settings, such as wireless mode,wireless network name(SSID), country code, 802.11 mode,output power and data rates can be configured in thissection.Wireless Mode Allows you to specify the operatingmode of the device. The mode depends on the networktopology requirements. There are 4 operating modessupported on the AirRouter: