3Com 3CRWE554G72T User Guide - Page 73

Firewall, Virtual Servers, Virtual DMZ

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Firewall 73 ■ Check the Get IP by DHCP check box if you want to obtain the IP information from a DHCP Server on the network. With this check box enabled, you can click Release to release the WAN IP Address for the Router, or click Renew to renew the current WAN IP Address, using DHCP. ■ Fill in the Initial IP Address, Initial Subnet Mask and Initial Gateway fields if your ISP has provided you with these settings. Alternatively, if the L2TP server is located in your DSL modem, click Suggest to select an IP address on the same subnet as the L2TP server. Check all of your settings, and then click Apply. Firewall On the main frame of the Firewall setup screen is a menu with six tabs: Virtual Servers, Special Applications, PCs Privileges, URL Filter, Content Filter and SPI. Virtual Servers Selecting the Firewall option on the main menu displays the Virtual Servers setup screen. (Figure 52) Virtual DMZ Figure 52 Virtual Servers Screen DMZ (De-Militarized Zone) Host is a computer without the protection of the firewall. This feature allows a single computer to be exposed to unrestricted 2-way communication from outside of your network. This

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Firewall
73
■
Check the
Get IP by DHCP
check box if you want to obtain the IP
information from a DHCP Server on the network.
With this check box enabled, you can click
Release
to release the WAN
IP Address for the Router, or click
Renew
to renew the current WAN IP
Address, using DHCP.
■
Fill in the
Initial IP Address, Initial Subnet Mask
and
Initial Gateway
fields if your ISP has provided you with these settings. Alternatively, if
the L2TP server is located in your DSL modem, click
Suggest
to select
an IP address on the same subnet as the L2TP server.
Check all of your settings, and then click
Apply
.
Firewall
On the main frame of the
Firewall
setup screen is a menu with six tabs:
Virtual Servers
,
Special Applications
,
PCs Privileges
,
URL Filter
,
Content
Filter
and
SPI
.
Virtual Servers
Selecting the
Firewall
option on the main menu displays the Virtual
Servers setup screen. (
Figure 52
)
Virtual DMZ
Figure 52
Virtual Servers Screen
DMZ (De-Militarized Zone) Host is a computer without the protection of
the firewall. This feature allows a single computer to be exposed to
unrestricted 2-way communication from outside of your network. This