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Change the range of IP addresses used
by the DHCP server
Once you change the IP address of the router, you
must change the range of IP addresses assigned by
the DHCP server in the router. The range should be
on the same subnet as the new IP address for the
LAN 1 port. Find out what range to use from the
system administrator of the remote peer device on
the tunnel.
1
From the Configuration menu, select DHCP
Server Setup.
2
Select the Enable DHCP Server check box.
3
Click the first entry in the IP Addresses dialog
box, and then click Edit.
4
Type a new First IP Address and Last Address,
and make sure the Network Mask matches the
new address range.
5
Click OK, then click OK again.
Start the VPN Tunnel Wizard
1
From the Configuration menu, select Connection
Setup.
2
Select Add Tunnel from the Port / Connection list
in the Connection Setup dialog box, and then
click the Add Tunnel button.
3
Fill in the parameters in each wizard dialog box,
as appropriate for your setup. Table 2 shows the
settings used for this example.
Note:
The values for the parameters in Table 2 are
examples only; you must enter the values specific to
your network.
Figure 23. Example VPN Tunnels. Two tunnels to the
same central site from more than one 8205 router.
VPN Tunnel Example 1
Branch Office 1
Setting
Remote IP Address
10.3.4.1
Local User ID
remoteoffice1
Local Network Address
192.168.1.0
Local Network Mask
255.255.255.0
Remote Network Address 10.3.4.0
Remote Network Mask
255.255.255.0
Encryption Algorithm
DES
Authentication Algorithm
MD5
Re-keying Interval
1 Day
Branch Office 2
Setting
Remote IP Address
10.3.4.1
Local User ID
remoteoffice2
Local Network Address
192.168.2.0
Local Network Mask
255.255.255.0
Remote Network Address 10.3.4.0
Remote Network Mask
255.255.255.0
Encryption Algorithm
DES
Authentication Algorithm
MD5
Re-keying Interval
1 Day
Table 2. Configuration Parameters. Settings used for
this example when configuring the VPN tunnel using the
VPN Tunnel Wizard.
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