Netgear FVS114 User Manual download pdf (Page 128)

Reference Manual for the ProSafe VPN Firewall FVS114

8-2 Advanced Configuration

202-10098-01, April 2005

• Default DMZ Server: Specifying a Default DMZ Server allows you to set up a computer or

server that is available to anyone on the Internet for services that you haven't defined. There

are security issues with doing this, so only do this if you're willing to risk open access. If you

do not assign a Default DMZ Server, the router discards any incoming service requests which

are undefined.

To assign a computer or server to be a DMZ server:

a. Click the Default DMZ Server checkbox

b. Type the IP address for that server.

c. Click Apply.

• Respond To Ping On Internet Port: If you want the router to respond to a 'Ping' from the

Internet, click this check box. This can be used as a diagnostic tool. Again, like the DMZ

server, this can be a security problem. You shouldn't check this box unless you have a specific

reason to do so.

• MTU Size: The normal MTU (Maximum Transmit Unit) value for most Ethernet networks is

1500 Bytes, or 1492 Bytes for PPPoE connections. For some ISPs you may need to reduce the

MTU. But this is rarely required, and should not be done unless you are sure it is necessary for

your ISP connection.

• Port Speed: In most cases, your router can automatically determine the connection speed of

the Internet (WAN) port. If you cannot establish an Internet connection and the Internet LED

blinks continuously, you may need to manually select the port speed.

If you know that the Ethernet port on your broadband modem supports 100BaseT, select

100M; otherwise, select 10M.

Default DMZ Server

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

response to one of your local computers or a service for which you have configured an inbound

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

This computer is called the Default DMZ Server.

The Default DMZ Server feature is helpful when using some online games and videoconferencing

applications that are incompatible with NAT. The firewall 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.

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Netgear FVS114 User Manual Page 128