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ProSafe Gigabit 8 Port VPN Firewall FVS318G Reference Manual
Connecting the VPN Firewall to the Internet 2-13
v1.1, August 2010
Configuring the Advanced Broadband Options
To configure the advanced broadband options:
1. Select Network Configuration from the main menu and Broadband ISP Settings from the
submenu. The Broadband ISP Settings screen displays.
2. Click the Advanced option arrow at the right of the tabs to display the Broadband Advanced
Options screen.
3. Edit the default information you want to change.
• 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
have 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 VPN firewall 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 have to manually select the port speed.
AutoSense is the default.
If you know that the Ethernet port on your broadband modem supports 100BaseT, select
100BaseT Half_Duplex; otherwise, select 10BaseT Half_Duplex. Use the half-duplex
settings unless you are sure you need full duplex.
Figure 2-10