Netgear FVL328 FVL328 Reference Manual - Page 44

Responding to Ping on Internet WAN Port, MTU Size, Port Speed, Apply, Default DMZ Server

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Model FVL328 ProSafe High-Speed VPN Firewall Reference Manual Revision 2 3. Select the PC to be used as the DMZ Server for this IP address. • Click Apply. Note: • All incoming traffic to that IP address will be sent to the selected PC. • Out-going traffic from the selected PC will use the IP address you entered, not the default WAN IP address. • If you only have one (1) Internet IP address, you cannot use the Multi-DMZ feature, only the Default DMZ Server setting above. Responding to Ping on Internet WAN Port If you want the FVL328 to respond to a ping from the Internet, click this check box. This should only be used as a diagnostic tool, since it allows your firewall to be discovered. 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. Any packets sent through the firewall 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, select Custom. 2. Enter a new size between 64 and 1500. 3. Click Apply to save the new configuration. 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. 4-8 WAN and LAN Configuration May 2004, 202-10030-02

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Model FVL328 ProSafe High-Speed VPN Firewall Reference Manual Revision 2
4-8
WAN and LAN Configuration
May 2004, 202-10030-02
3.
Select the PC to be used as the DMZ Server for this IP address.
•
Click
Apply
.
Note:
•
All
incoming traffic to that IP address will be sent to the selected PC.
•
Out-going traffic from the selected PC will use the IP address you entered, not the default
WAN IP address.
•
If you only have one (1) Internet IP address, you cannot use the Multi-DMZ feature, only the
Default DMZ Server
setting above.
Responding to Ping on Internet WAN Port
If you want the FVL328 to respond to a ping from the Internet, click this check box. This should
only be used as a diagnostic tool, since it allows your firewall to be discovered. 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.
Any packets sent through the firewall 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, select Custom.
2.
Enter a new size between 64 and 1500.
3.
Click Apply to save the new configuration.
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.