Ubiquiti Networks PowerBridgM - Manual (Page 35)

32
Chapter 5: Network Tab airOS ™ v5.5.4 User Guide
Ubiquiti Networks, Inc.
Configuration Mode
The Network tab has two views, Simple and Advanced.
Simple Displays the basic configuration settings:
• “WAN Network Settings” on page 32
• “LAN Network Settings” on page 35
• “Port Forwarding” on page 38
• “Multicast Routing Settings” on page 39
Advanced configuration settings are hidden.
Advanced Displays the advanced configuration settings:
• “Management Network Settings” on page 36
• “Interfaces” on page 36
• “IP Aliases” on page 37
• “VLAN Network” on page 37
• “Bridge Network” on page 37
• “Firewall” on page 38
• “Static Routes” on page 38
• “Traffic Shaping” on page 39
WAN Network Settings
WAN Interface Select the interface used for
management.
WAN IP Address The IP address of the WAN interface
connected to the external network. You can use this IP
address for routing and device management purposes.
The device can use one of the following:
• “DHCP” on page 32
• “Static” on page 33
• “PPPoE” on page 34
DHCP
The external DHCP server assigns a dynamic IP address,
gateway IP address, and DNS address to the device.
DHCP Fallback IP Specify the IP address for the device to
use if an external DHCP server is not found.
DHCP Fallback Netmask Specify the netmask for the
device to use if an external DHCP server is not found.
MTU (Available in Simple view.) The Maximum
Transmission Unit (MTU) is the maximum packet size (in
bytes) that a network can transmit. The default is 1500.
NAT Network Address Translation (NAT) enables packets
to be sent from the external network (WAN) to the local
interface IP address and then sub-routed to other client
devices on its local network while the airOS device is
operating in Access Point or AP‑Repeater mode. Packets are
routed in the reverse direction in Station mode.
NAT is implemented using the masquerade type firewall
rules. NAT firewall entries are stored in the iptables
nat table. Specify static routes to allow packets to pass
through the airOS device if NAT is disabled.
•
NAT Protocol If NAT is enabled, you can modify data
packets to allow them to pass through the device. To
avoid modification of some specific types of packets,
such as SIP, PPTP, FTP, or RTSP, then uncheck the
respective box(es).
Block management access To block device management
from the WAN interface, check this box. This feature makes
Router mode more secure if the device has a public IP
address.
DMZ DMZ (Demilitarized Zone) specifically allows one
computer/device behind NAT to become “demilitarized”,
so all ports from the public network are forwarded to the
ports of this private network, similar to a 1:1 NAT.