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SONICWALL SONICOS STANDARD 3.0 ADMINISTRATOR’S GUIDE
69
Configuring the WAN Interface
The WAN Interface Settings information at the top of the Ethernet page is the Ethernet address of
the WAN interface on the SonicWALL security appliance.
Auto Negotiate is selected by default because the Ethernet links automatically negotiate the speed
and duplex mode of the Ethernet connection. If you select Force, you must force the connection
speed and duplex from the Ethernet card to the SonicWALL security appliance as well.
If you select Force, an information dialog is displayed with the following message:
Note: Disabling Auto Negotiate on this interface will also disable AutoMDIX on this interface. You
may need to switch from a straight-through Ethernet cable to a cross over Ethernet cable, or vice-
versa. Click OK to proceed.
Select Proxy management workstation Ethernet address on WAN if you are managing the
Ethernet connection from the LAN side of your network. The SonicWALL security appliance takes the
Ethernet address of the computer managing the SonicWALL security appliance and proxies that
address onto the WAN port of the SonicWALL security appliance. For instance, if your ISP is using
the MAC address of your network card for identification, you can proxy the MAC address of your
network card onto the SonicWALL WAN port.
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Tip: If you are not managing the Ethernet connection from the LAN, the SonicWALL security
appliance looks for a random computer on the network creating a lengthy search process.
Note: If you enable this feature, it may take the SonicWALL a lengthy period of time to locate the
management station.
Fragment non-VPN outbound packets larger than WAN MTU is selected by default with a default
WAN MTU value of 1500 based on the Ethernet standard MTU. Specifies all non-VPN outbound
packets larger than this Interface’s MTU be fragmented. The minimum value is 68. Decreasing the
packet size can improve network performance as large packets require more network transmissions
when a router cannot handle the packet size. Specifying the fragmenting of VPN outbound packets is
set in the VPN > Advanced page.
Ignore Don’t Fragment (DF) Bit - Overrides DF bits in packets.
Select Enable Bandwidth Management to allocate bandwidth resources to critical applications on
the your network. Enter the total bandwidth available in the Available WAN Bandwidth (Kbps) field.
20.00 Kbps is the default available WAN bandwidth.
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Alert: Bandwidth management is only available on outbound network traffic.