ASUS 4G-N12 Router Manual PDF (Setup & Configuration Guide)

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4.3.5 Virtual Server / Port Forwarding

Virtual Server is a method to direct network traﬃc from the

Internet to a speciﬁc port or a speciﬁc range of ports to a device or

number of devices on your local network.

If you conﬁgure the LTE Router as a virtual server, remote users

accessing services such as web or FTP at your local site via public

IP addresses can be automatically redirected to local servers

conﬁgured with private IP addresses. In other words, depending

on the requested service (TCP/UDP port number), the LTE Router

redirects the external service request to the appropriate server

(located at another internal IP address).

For example, if you set Type/Public Port to TCP/80 (Http or web)

and the Private IP/Port to 192.168.2.2:80, then all HTTP requests

from outside users will be transferred to 192.168.2.2 on port

80. Therefore, by just entering the IP address provided by the

ISP, Internet users can access the service they need at the local

address to which you redirect them.

NOTE

:

The more common TCP service ports include: HTTP: 80, FTP: 21,

Telnet: 23, and POP3: 110. A list of ports is maintained at http://www.

iana.org/assignments/port-numbers.

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4.3.6 DMZ

Virtual DMZ exposes one client to the Internet, allowing this

client to receive all inbound packets directed to your Local Area

Network.

Inbound traﬃc from the Internet is usually discarded and routed

to a speciﬁc client only if port forwarding or a port trigger has

been conﬁgured on the network. In a DMZ conﬁguration, one

network client receives all inbound packets.

Setting up DMZ on a network is useful when you need incoming

ports open or you want to host a domain, web, or e-mail server.

CAUTION:

Opening all the ports on a client to the Internet makes the

network vulnerable to outside attacks. Please be aware of the security

risks involved in using DMZ.

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To set up DMZ:

1. From the navigation panel, go to

Advanced Settings

>

WAN

>

DMZ

tab.

2. Conﬁgure the setting below. When done, click

Apply

.

•

Enable DMZ:

Key in the last digit of the client’s LAN IP

address that will provide the DMZ service and be exposed

on the Internet. Ensure that the server client has a static IP

address. Tick

Enable

.

To remove DMZ:

1. Untick

Enable

, and click

Apply

.

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4.3.7 DDNS

Setting up DDNS (Dynamic Domain Name System) allows you

to access the router outside your network through the provided

DDNS service. The DDNS service, which maps a domain name to a

static or dynamic IP address, is powered by DynDNS.org.

With a DDNS connection, you can host a website, an email server,

an FTP site, and other Internet apps in your local area network

even when using dynamic IP addresses for the domain names.

To set up DDNS:

1. Select

DDNS Setting

from the dropdown list and click

Web

Site

to go to the DynDNS.org web site.

2. Complete the registration on the DDNS web site.

3. Enter the username, password and domain name of your DDNS

settings.

4. Click

Update Dynamic DNS

to update your IP address

conﬁguration.

5. When done, click

Apply

.

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4.4

Firewall

4.4.1 General

The wireless router can serve as a hardware ﬁrewall for your

network. Set up the ﬁrewall to protect your network from

malicious attacks such as Denial of Service (DoS) attacks. DoS

attacks disable a device or network to deny users access to

network resources.

To set up basic Firewall settings:

1. From the navigation panel, go to

Advanced Settings

>

Firewall

>

General

tab.

2. On the

Enable Firewall

ﬁeld, select

Enable

.

3. On the

Respond Ping Request from WAN

ﬁeld, select

Yes

to

block hackers from pinging devices in your network from the

Internet.

4. Click

Apply

.

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