Reference Manual for the Model RP614 v2 Web Safe Router

5-4

Advanced Configuration of the Router

4.

Type the same port number in the End Port box that you typed in the Start Port box.

5.

Type the IP address of the additional computer in the Server IP Address box.

6.

Click Apply.

Some online games and videoconferencing applications are incompatible with NAT. The RP614

v2 router is programmed to recognize some of these applications and to work properly with them,

but there are other applications that may not function well. In some cases, one local PC can run the

application properly if that PC’s IP address is entered as the default in the PORTS Menu. If one

local PC acts as a game or videoconferencing host, enter its IP address as the default.

Configuring the WAN Setup Options

The WAN Setup options let you configure a DMZ server, change the MTU size and enable the

router to respond to a Ping on the WAN port. These options are discussed below.

Setting Up a Default DMZ Server

The default DMZ server feature is helpful when using some online games and videoconferencing

applications that are incompatible with NAT. The router is programmed to recognize some of these

applications and to work properly with them, but there are other applications that may not function

well. In some cases, one local PC can run the application properly if that PC’s IP address is entered

as the default DMZ server.

Incoming traffic from the Internet is normally discarded by the router unless the traffic is a

response to one of your local computers or a service that you have configured in the Ports menu.

Instead of discarding this traffic, you can have it forwarded to one computer on your network. This

computer is called the Default DMZ Server.

Note:

DMZ servers pose a security risk. A computer designated as the default DMZ

server loses much of the protection of the firewall, and is exposed to exploits from the

Internet. If compromised, the DMZ server can be used to attack your network.

Reference Manual for the Model RP614 v2 Web Safe Router

Advanced Configuration of the Router

5-5

The WAN Setup menu, shown below lets you configure a Default DMZ Server.

Figure 5-2: WAN Setup menu.

To assign a computer or server to be a Default DMZ server, follow these steps:

1.

Click WAN Setup link on the Advanced section of the main menu.

2.

Type the IP address for that server. To remove the default DMZ server, replace the IP address

numbers with all zeros.

3.

Click Apply.

Respond to Ping on Internet WAN Port

If you want the router to respond to a 'ping' from the Internet, click the ‘Respond to Ping on

Internet WAN Port’ check box. This should only be used as a diagnostic tool, since it allows your

router to be discovered. Don't check this box unless you have a specific reason to do so.

Reference Manual for the Model RP614 v2 Web Safe Router

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Advanced Configuration of the Router

Setting the MTU Size

The default MTU size is usually fine. The normal MTU (Maximum Transmit Unit) value for most

Ethernet networks is 1500 Bytes. For some ISPs, particularly some using PPPoE, you may need to

reduce the MTU. This should not be done unless you are sure it is necessary by your ISP.

Any packets sent through the router that are larger than the configured MTU size will be

repackaged into smaller packets to meet the MTU requirement. To change the MTU size:

1.

Under MTU Size, enter a new size between 64 and 1500.

2.

Click Apply to save the new configuration.

Using the LAN IP Setup Options

The second feature category under the Advanced heading is LAN IP Setup. This menu allows

configuration of LAN IP services such as DHCP and RIP. From the Main Menu of the browser

interface, under Advanced, click on LAN IP Setup to view the LAN IP Setup menu, shown below.

Figure 5-3: LAN IP Setup Menu

Reference Manual for the Model RP614 v2 Web Safe Router

Advanced Configuration of the Router

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Configuring LAN TCP/IP Setup Parameters

The router is shipped preconfigured to use private IP addresses on the LAN side, and to act.as a

DHCP server. The router’s default LAN IP configuration is:

•

LAN IP addresses—192.168.0.1

•

Subnet mask—255.255.255.0

These addresses are part of the IETF-designated private address range for use in private networks,

and should be suitable in most applications. If your network has a requirement to use a different IP

addressing scheme, you can make those changes in this menu.

The LAN IP parameters are:

•

IP Address

This is the LAN IP address of the router.

•

IP Subnet Mask

This is the LAN Subnet Mask of the router. Combined with the IP address, the IP Subnet Mask

allows a device to know which other addresses are local to it, and which must be reached

through a gateway or router.

•

RIP Direction

RIP (Router Information Protocol) allows a router to exchange routing information with other

routers. The RIP Direction selection controls how the router sends and receives RIP packets.

Both is the default.

—

When set to Both or Out Only, the router will broadcast its routing table periodically.

—

When set to Both or In Only, it will incorporate the RIP information that it receives.

—

When set to None, it will not send any RIP packets and will ignore any RIP packets

received.

•

RIP Version

This controls the format and the broadcasting method of the RIP packets that the router sends.

(It recognizes both formats when receiving.) By default, this is set for RIP-1.

—

RIP-1 is universally supported. RIP-1 is probably adequate for most networks, unless you

have an unusual network setup.

—

RIP-2 carries more information. RIP-2B uses subnet broadcasting.

Reference Manual for the Model RP614 v2 Web Safe Router

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Advanced Configuration of the Router

Using the Router as a DHCP server

By default, the router will function as a DHCP (Dynamic Host Configuration Protocol) server,

allowing it to assign IP, DNS server, and default gateway addresses to all computers connected to

the router's LAN. The assigned default gateway address is the LAN address of the router. IP

addresses will be assigned to the attached PCs from a pool of addresses specified in this menu.

Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.

For most applications, the default DHCP and TCP/IP settings of the router are satisfactory. See

“IP

Configuration by DHCP

” on

page B-11

for an explanation of DHCP and information about how to

assign IP addresses for your network.

If another device on your network will be the DHCP server, or if you will manually configure the

network settings of all of your computers, clear the ‘Use router as DHCP server’ check box.

Otherwise, leave it checked.

Specify the pool of IP addresses to be assigned by setting the Starting IP Address and Ending IP

Address. These addresses should be part of the same IP address subnet as the router’s LAN IP

address. Using the default addressing scheme, you should define a range between 192.168.0.2 and

192.168.0.253, although you may wish to save part of the range for devices with fixed addresses.

The router will deliver the following parameters to any LAN device that requests DHCP:

•

An IP Address from the range you have defined

•

Subnet Mask

•

Gateway IP Address (the router’s LAN IP address)

•

Primary DNS Server (if you entered a Primary DNS address in the Basic Settings menu;

otherwise, the router’s LAN IP address)

•

Secondary DNS Server (if you entered a Secondary DNS address in the Basic Settings menu

Note:

If you change the LAN IP address of the router while connected through the

browser, you will be disconnected. You must then open a new connection to the new IP

address and log in again.