FVS338 ProSafe VPN Firewall 50 Re ference Manual
2-8 Connecting the FVS338 to the Internet
v1.0, March 2008
This could occur on some older broadband modems. If you know that the Ethernet port on
your broadband modem supports 100Bas eT, select 100BaseT; otherwise, s elect 10BaseT. Use
the half-duplex settings if full-duplex modes do not work.
You can also change the standard MTU (Maximum Transmit Unit) value for dialup modems from
the Dialup ISP Settings screen. THe standard value is 576 bytes, but some ISPs may require that
you reduce the MTU. However, this is rarely required, and should not be done unless specifically
required by the ISP,
To change the MTU value for your dialup modem:
Step 1.Select Network Configuration from the main menu, WAN Settings from the submenu and
the Dialup ISP Settings tab. Click the Advanced link on the Dialup ISP Settings screen.
2. Select the Custom radio button and enter the MTU value, in bytes.
3. Click Apply to save your settings.
Figure 2-5