158
ENABLE FULLCONE NAT
This option becomes available when NAT is enabled. Known as one-to-one NAT, all
requests from the same internal IP address and port are mapped to the same
external IP address and port. An external host can send a packet to the internal host,
by sending a packet to the mapped external address.
DIAL ON DEMAND
The VI-3223u can be configured to disconnect if there is no activity for a period of
time by selecting the
Dial on demand
checkbox
. You must also enter an
inactivity timeout period in the range of 1 to 4320 minutes.
PPP IP EXTENSION
The PPP IP Extension is a special feature deployed by some service providers.
Unless your service provider specifically requires this setup, do not select it.
PPP IP Extension does the following:
•
Allows only one PC on the LAN.
•
Disables NAT and Firewall.
•
The device becomes the default gateway and DNS server to the PC
through DHCP using the LAN interface IP address.
•
The device extends the IP subnet at the remote service provider to the
LAN PC. i.e. the PC becomes a host belonging to the same IP subnet.
•
The device bridges the IP packets between WAN and LAN ports, unless
the packet is addressed to the device’s LAN IP address.
•
The public IP address assigned by the remote side using the PPP/IPCP
protocol is actually not used on the WAN PPP interface. Instead, it is
forwarded to the PC LAN interface through DHCP. Only one PC on the
LAN can be connected to the remote, since the DHCP server within the
device has only a single IP address to assign to a LAN device.
ENABLE NAT
If the LAN is configured with a private IP address, the user should select this
checkbox
. The NAT submenu will appear in the Advanced Setup menu after reboot.
On the other hand, if a private IP address is not used on the LAN side (i.e. the LAN
side is using a public IP), this checkbox
should not be selected to free up system
resources for better performance.
ENABLE FIREWALL
If this checkbox
is selected, the Security submenu will be displayed on the
Advanced Setup menu after reboot. If firewall is not necessary, this checkbox
should not be selected to free up system resources for better performance.
USE STATIC IPv4 ADDRESS
Unless your service provider specially requires it, do not select this checkbox
. If
selected, enter the static IP address in the
IPv4 Address
field. Don’t forget to
adjust the IP configuration to Static IP Mode as described in
section 0
.
Summary of Contents for VI-3223u
Page 1: ...VI 3223u Multi DSL WLAN IAD User Manual Version B1 0 July 19 2013 261099 020...
Page 7: ...6 1 2 Application The following diagram depicts a typical application of the VI 3223u...
Page 16: ...15 STEP 3 After successfully logging in for the first time you will reach this screen...
Page 26: ...25...
Page 32: ...31 Chapter 5 Advanced Setup The following screen shows the advanced menu options...
Page 67: ...66 5 11 UPnP Select the checkbox provided and click Apply Save to enable UPnP protocol...
Page 72: ...71 5 15 1 Storage Device Info Display after storage device attached for your reference...
Page 74: ...73 Automatically Add Clients With Following DHCP Vendor IDs...
Page 98: ...97 Click Apply Save to set new advanced wireless options...
Page 103: ...102 7 1 SIP Basic Setting 7 1 1 Global Parameters A common parameter setting...
Page 104: ...103 7 1 2 Service Provider This screen contains basic SIP configuration settings...
Page 106: ...105 7 2 SIP Advanced This screen contains the advanced SIP configuration settings...
Page 107: ...106 7 2 1 Global Parameters A common parameter setting...
Page 172: ...171 Click Next to continue or click Back to return to the previous step...