ProSecure Unified Threat Management UTM10 or UTM25 Reference Manual
Manually Configuring Internet and WAN Settings
3-23
v1.0, September 2009
3.
Enter the default information settings as explained in
Table 3-8
.
Table 3-8. Advanced WAN Settings
Setting
Description (or Subfield and Description)
MTU Size
Make
one
of the following selections:
Default
Select the
Default
radio button for the normal Maximum Transmit Unit
(MTU) value. For most Ethernet networks this value is 1500 Bytes, or
1492 Bytes for PPPoE connections.
Custom
Select the
Custom
radio button and enter an MTU value in the Bytes field.
For some ISPs, you might need to reduce the MTU. 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, the UTM can automatically determine the connection speed of the WAN port of the
device (modem or router) that provides the WAN connection. If you cannot establish an Internet
connection, you might need to manually select the port speed. If you know the Ethernet port speed of
the modem or router, select it from the pull-down menu. Use the half-duplex settings only of the full-
duplex settings do not function properly.
Select one of the following speeds from the pull-down menu:
•
AutoSense
. Speed autosensing. This is the default setting, which can sense 1000BaseT speed at full
duplex.
•
10BaseT Half_Duplex
. Ethernet speed at half duplex.
•
10BaseT Full_Duplex
. Ethernet speed at full duplex.
•
100BaseT Half_Duplex
. Fast Ethernet speed at half duplex.
•
100BaseT Full_Duplex
. Fast Ethernet speed at full duplex.
Router’s MAC Address
Make
one
of the following selections:
Use Default Address
Each computer or router on your network has a unique 32-bit local
Ethernet address. This is also referred to as the computer's Media Access
Control (MAC) address. To use the UTM’s own MAC address, select the
Use Default Address
radio button.
Use this computer's MAC
Select the
Use this computer's MAC
radio button to allow the UTM to
use the MAC address of the computer you are now using to access the
Web Management Interface. This setting is useful if you ISP requires MAC
authentication.
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