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Advanced Settings

LAN

This screen allows you to configure the Local Area Network (LAN) interface on your Router.

See the field descriptions below for more details.

PARAMETER

DEFINITION

IP Address

Enter the IP address for the LAN interface

Subnet Mask

Enter the subnet mask for the LAN interface

Enable IGMP Snooping

Enable by ticking the box

Standard Mode: In standard mode, multicast traffic will flood to all bridge ports when no client subscribes to a

multicast group.

Blocking Mode: In blocking mode, the multicast data traffic will be blocked. When there are no client

subscriptions to a multicast group, it will not flood to the bridge ports.

Enable LAN side Firewall

Select to enable the Firewall on the LAN side

Disable DHCP Server

Disables the DHCP server. Only to be done if Static IP address is set up

Enable DHCP Server

Select Enable DHCP server and enter your starting and ending IP addresses and the lease time. This setting

configures the router to automatically assign IP, default gateway and DNS server addresses to every DHCP

client on your LAN

Enable DHCP Server Relay

To relay DHCP requests from the subnet with no DHCP server on it to a DHCP server on other subnets. DHCP

Server Relay is disabled by default. To access enable DHCP relay, please un-tick NAT enable first, that means to

disable NAT first, and then press save button.

Configure the second IP Address

and Subnet Mask for LAN Interface

Configure a second IP address by ticking the checkbox shown below and enter the following information:

Enter the secondary IP address for the LAN interface.

Enter the secondary subnet mask for the LAN interface.

Click Apply/Save to save your new LAN settings.

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NetComm 3G42WT – DC-HSPA+ 42Mbps Wi-Fi Router

YML42T

NAT

Port Forwarding

Port Forwarding allows you to direct incoming traffic from the Internet side (identified by Protocol and External port) to the internal

server with a private IP address on the LAN side. The Internal port is required only if the external port needs to be converted to a

different port number used by the server on the LAN side. A maximum of 32 entries can be configured.

To add a Virtual Server, click Add. The following screen will display.

PARAMETER

DEFINITION

Select a Service or Custom Server

User should select the service from the list or create a custom server and enter a name for the server

Server IP Address

Enter the IP address for the server.

External Port Start

Enter the starting external port number (when you select Custom Server). When a service is selected the port

ranges are automatically configured.

External Port End

Enter the ending external port number (when you select Custom Server). When a service is selected the port

ranges are automatically configured.

Protocol

User can select from: TCP, TCP/UDP or UDP.

Internal Port Start

Enter the internal port starting number (when you select Custom Server). When a service is selected the port

ranges are automatically configured

Internal Port End

Enter the internal port ending number (when you select Custom Server). When a service is selected the port

ranges are automatically configured.

Click Apply/Save to save the configured Virtual Server settings.

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Port Triggering

Some applications require specific ports in the Router’s firewall to be open for access by remote parties. Port Triggering opens up

the ‘Open Ports’ in the firewall when an application on the LAN initiates a TCP/UDP connection to a remote party using the

‘Triggering Ports’.

The Router allows the remote party from the WAN side to establish new connections back to the application on the LAN side using

the ‘Open Ports’. A maximum 32 entries can be configured.

To add a Trigger Port, simply click Add. The following will be displayed.

PARAMETER

DEFINITION

Select an Application or Custom

Application

User should select the application from the list or the user can enter the name of their choice.

Trigger Port Start

Enter the starting trigger port number (when you select custom application). When an application is selected, the

port ranges are automatically configured.

Trigger Port End

Enter the ending trigger port number (when you select custom application). When an application is selected, the

port ranges are automatically configured.

Trigger Protocol

TCP, TCP/UDP or UDP.

Open Port Start

Enter the starting open port number (when you select custom application). When an application is selected, the

port ranges are automatically configured.

Open Port End

Enter the ending open port number (when you select custom application). When an application is selected, the

port ranges are automatically configured.

Open Protocol

TCP, TCP/UDP or UDP

Click Apply/Save to save the configured Port Trigger settings.

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NetComm 3G42WT – DC-HSPA+ 42Mbps Wi-Fi Router

YML42T

DMZ Host

Your Router will forward IP packets from the Wide Area Network (WAN) that do not belong to any of the applications configured in

the Virtual Servers table to the DMZ host computer.

Enter the computer’s IP address and click Save/Apply to activate the DMZ host.

Clear the IP address field and click Save/Apply to deactivate the DMZ host.

Security

IP Filtering

The IP Filtering screen sets filter rules that limit incoming and outgoing IP traffic. Multiple filter rules can be set with at least one

limiting condition. All conditions must be fulfilled before individual IP packets can pass the filter.

Outgoing IP Filter

The default setting for Outgoing traffic is ACCEPTED. Under this condition, all outgoing IP packets that match the filter rules will be

BLOCKED.

To add a filtering rule, click Add. The following screen will display.

PARAMETER

DEFINITION

Filter Name

The filter rule label

Protocol

TCP, TCP/UDP, UDP or ICMP Source IP address

Source IP address

Enter source IP address Source Subnet Mask

Destination IP address

Enter source subnet mask

Source Port (port or port:port)

Enter source port number or port range

Destination IP address

Enter destination IP address

Destination Subnet Mask

Destination Subnet Mask

Destination port (port or port:port)

Enter destination port number or range

Click Apply/Save to save and activate the filter.

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Incoming IP Filter

The default setting for all Incoming traffic is BLOCKED. Under this condition only those incoming IP packets that match the filter

rules will be ACCEPTED.

To add a filtering rule, click Add. The following screen will display.

Please note: Refer to the Outgoing IP Filter table for field descriptions. The configuration steps are identical.

Click Apply/Save to save and activate the filter.

Parental Control

The Parental Control feature allows you to take advanced measures to ensure the computers connected to the LAN are used only

when and how you decide.

Time Restriction

This Parental Control allows you to restrict access from a Local Area Network (LAN) to an outside network through the Router on

selected days at certain times. Make sure to activate the Internet Time server synchronization as described in section 8.3 SNTP, so

that the scheduled times match your local time.

Click Add to display the following screen.