Vanguard 3000 Multicarrier Cellular Data Modem & IP Router PN 134732-VG3000 Rev. D| Page 32
Important: The LAN subnet must not overlap with the WLAN subnet defined in the Access Point tab of the WLAN page.
LAN Masquerade
When enabled, the Vanguard masquerades all Ethernet traffic to the LAN, making all WAN traffic appear as if
it originated from the Vanguard 3000. This can be useful in applications where less-capable equipment on the
local LAN cannot cope with connections from multiple Host IP addresses.
Bind Services to Eth IP
UDP datagrams or TCP sockets from services inside the Vanguard (Serial, IO, GPS) normally appear to come
from the interface (LAN or WAN) closest to the destination. Enable this option to force the source address to
be the LAN Ethernet IP address. This can be useful if packets are being sent through a VPN tunnel. Note that
outside of a tunnel, NAT may still force the source address to be rewritten to the WAN address.
DNS Resolving
DNS Auto
Selecting Enable enables the Vanguard to act as DNS Proxy for the DHCP clients. Selecting Disable will provide
the DNS Server 1 or 2 addresses to DHCP clients.
Domain Name Suffix
Suffix to append to short, unqualified computer names for local DNS lookup.
DNS Server 1 IP Address
The Ethernet IP address of the preferred DNS server. The default address is 192.168.1.50, the same as the LAN
Ethernet IP Address for the modem. If the LAN Ethernet ID Address changes, the DNS Server 1 address will
automatically change to the same.
DNS Server 2 IP Address
Ethernet address of the alternate DNS server. The default is set to 0.0.0.0.
DHCP Configuration
DHCP
Dynamic Host Configuration Protocol; a protocol used by client devices that are connected to the LAN port of
this device to automatically obtain an IP address assigned by this device. Selecting Enable will configure this
device to assign IP addresses to client devices taken from a pool specified by the values entered in DHCP start
range and DHCP end range. Selecting Disable will turn off this DHCP server functionality.
DHCP start range
DHCP server starting IP address. The default is set as 192.168.1.120.
DHCP end range
DHCP server ending IP address. The maximum usable number is 253. The default is set to 192.168.1.200.
DHCP Lease Time
Sets the duration, in seconds, the connected device is allowed to keep the assigned IP address. In many cases
