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Advanced Configuration
8-1
v1.0, September 2007
Chapter 8
Advanced Configuration
This chapter describes how to configure the advanced features of your ProSafe 802.11g Wireless
VPN Firewall FVG318.
Configuring Dynamic DNS
If your network has a permanently assigned IP address, you can register a domain name and have
that name linked with your IP address by public Domain Name Servers (DNS). However, if your
Internet account uses a dynamically assigned IP address, you will not know in advance what your
IP address will be, and the address can change frequently. In this case, you can use a commercial
dynamic DNS service, which will allow you to register your domain to their IP address, and will
forward traffic directed to your domain to your frequently-changing IP address.
The firewall contains a client that can connect to a dynamic DNS service provider. To use this
feature, you must select a service provider and obtain an account with them. After you have
configured your account information in the firewall, whenever your ISP-assigned IP address
changes, your firewall will automatically contact your dynamic DNS service provider, log in to
your account, and register your new IP address.
1.
Log in to the firewall at its default LAN address of
with its default user
name of
admin
, default password of
password
, or using whatever password and LAN address
you have chosen for the firewall.
2.
Select Network Configuration > Dynamic DNS on the main menu of the browser interface.
The Dynamic DNS screen will display.
3.
Access the Web site of one of the dynamic DNS service providers whose names appear in the
menu, and register for an account.
For example, for dyndns.org, go to
www.dyndns.org
.
4.
Select the name of your dynamic DNS Service Provider.
5.
Type the host and domain name that your dynamic DNS provider gave you. This will look like
a URL, such as
myName.dyndns.org
.
6.
Type the user name for your dynamic DNS account.
7.
Type the password (or key) for your dynamic DNS account.
Page 132 / 176
ProSafe 802.11g Wireless VPN Firewall FVG318 Reference Manual
8-2
Advanced Configuration
v1.0, September 2007
8.
If your dynamic DNS provider allows the use of wildcards in resolving your URL, you may
select the Use wildcards check box to activate this feature.
For example, the wildcard feature will cause *.yourhost.dyndns.org to be aliased to the same
IP address as yourhost.dyndns.org
9.
Click
Apply
to save your configuration.
Using the LAN IP Setup Options
The LAN IP Setup menu allows configuration of LAN IP services such as DHCP. Select Network
Configuration > LAN Setup to view the screen shown below
Configuring LAN TCP/IP Setup Parameters
The firewall is shipped preconfigured to use private IP addresses on the LAN side, and to act as a
DHCP server. The firewall’s default LAN IP configuration is:
•
LAN IP addresses: 192.168.0.1
•
Subnet mask: 255.255.255.0
Note:
If your ISP assigns a private WAN IP address such as 192.168.x.x or 10.x.x.x, the
dynamic DNS service will not work because private addresses will not be routed
on the Internet.
Figure 8-1
Page 133 / 176
ProSafe 802.11g Wireless VPN Firewall FVG318 Reference Manual
Advanced Configuration
8-3
v1.0, September 2007
These addresses are part of the IETF-designated private address range for use in private networks,
and should be suitable in most applications. If your network has a requirement to use a different IP
addressing scheme, you can make those changes in this menu.
The LAN IP parameters are:
•
IP Address
. This is the LAN IP address of the firewall.
•
IP Subnet Mask
. This is the LAN Subnet Mask of the firewall. Combined with the IP address,
the IP Subnet Mask allows a device to know which other addresses are local to it, and which
must be reached through a gateway or firewall.
Using the Firewall as a DHCP server
By default, the firewall functions as a DHCP (Dynamic Host Configuration Protocol) server,
allowing it to assign IP, DNS server, and default gateway addresses to all computers connected to
the firewall’s LAN. The assigned default gateway address is the LAN address of the firewall. IP
addresses will be assigned to the attached PCs from a pool of addresses specified in this menu.
Each pool address is tested before it is assigned to avoid duplicate addresses on the LAN.
For most applications, the default DHCP and TCP/IP settings of the firewall are satisfactory. See
“Preparing a Computer for Network Access
” in
Appendix B, “Related Documents
” for an
explanation of DHCP and information about how to assign IP addresses for your network.
If another device on your network will be the DHCP server, or if you will manually configure the
network settings of all of your computers, clear the
Use router as DHCP server
check box.
Otherwise, leave it checked.
To specify the pool of IP addresses to be assigned, set the Starting IP Address and Ending IP
Address. These addresses should be part of the same IP address subnet as the firewall’s LAN IP
address. Using the default addressing scheme, you should define a range between 192.168.0.2 and
192.168.0.100, although you may wish to save part of the range for devices with fixed addresses.
The firewall will deliver the following parameters to any LAN device that requests DHCP:
•
An IP address from the range you have defined
•
Subnet mask
•
Gateway IP address (the firewall’s LAN IP address)
Note:
If you change the LAN IP address of the firewall while connected through the
browser, you will be disconnected. You must then open a new connection to the
new IP address and log in again.
Page 134 / 176
ProSafe 802.11g Wireless VPN Firewall FVG318 Reference Manual
8-4
Advanced Configuration
v1.0, September 2007
•
Primary DNS server (if you entered a primary DNS address in the WAN Settings menu;
otherwise, the firewall’s LAN IP address)
•
Secondary DNS server (if you entered a secondary DNS address in the WAN Settings menu
Using Address Reservation
When you specify a reserved IP address for a PC on the LAN, that PC will always receive the
same IP address each time it accesses the firewall’s DHCP server. Reserved IP addresses should be
assigned to servers that require permanent IP settings.
To reserve an IP address:
1.
Click the
LAN Groups
tab.
2.
In the Add Known PCs and Devices section, enter a name for the PC in the Name field so that
it is easily recognizable.
3.
From the IP Address Type pull-down menu, select Reserved (DHCP Client).
4.
Type the IP address to assign to the PC or server.
(Choose an IP address from the firewall’s LAN subnet, such as 192.168.0.X.)
5.
Type the MAC Address of the PC or server.
6.
Click
Apply
to enter the reserved address into the table.
To edit or delete a reserved address entry:
1.
Click
Edit
next to the reserved address you want to edit or delete and edit the fields on the Edit
Known PC and Device screen. Click
Apply
.
2.
Select the checkbox adjacent to the IP address you want to delete and click
Delete
.
Note:
The reserved address will not be assigned until the next time the PC contacts
the firewall’s DHCP server. Reboot the PC or access its IP configuration and
force a DHCP release and renew.
Page 135 / 176
ProSafe 802.11g Wireless VPN Firewall FVG318 Reference Manual
Advanced Configuration
8-5
v1.0, September 2007
Configuring Static Routes
Static Routes provide additional routing information to your firewall. Under normal
circumstances, the firewall has adequate routing information after it has been configured for
Internet access, and you do not need to configure additional static routes. You must configure
static routes only for unusual cases such as multiple firewalls or multiple IP subnets located on
your network.
Select Network Configuration > Routing to view the Static Route table shown on the Routing
screen below.
To add a Static Route:
1.
Click
Add
to open the Add screen shown below.
2.
Type a route name for this static route in the Route Name box.
(This is for identification purpose only.)
3.
Select Private if you want to limit access to the LAN only. The static route will not be reported
in RIP. You must also select LAN from the Interface pull-down menu.
4.
Select Active to make this route effective.
Figure 8-2
Figure 8-3

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