D-Link DFL-700 - Manual (Page 100)

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5. Add a new user, Firewall->Users:
Under Users in local database click Add new
Name the new user BranchOffice
Enter password: 1234567890
Retype password: 1234567890
Leave static client IP empty (could also be set to eg 192.168.1.200. If no IP is set
here the IP pool from the L2TP server settings are used).
Set Networks behind user to 192.168.4.0/24
Click Apply
6. Click Activate and wait for the firewall to restart.
This example will allow all traffic between the two offices. To get a more secure solution read
the A more secure LAN-to-LAN VPN solution section in this chapter.