Configuring VPN and Security
Configuring Advanced VPN Parameters
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VPN clients must be configured with the same VPN policy parameters used in the 
VPN tunnel that the client wishes to use: encryption, authentication, lifetime, and 
PFS key-group. Upon establishing these authentication parameters, the VPN client 
user database must also be populated with an account to give a user access to 
the tunnel. The VPN gateway authenticates users in this list when XAUTH is used 
in an IKE policy.
VPN client software is required to establish a VPN tunnel between the router and 
remote endpoint. Open source software (such as OpenVPN or Openswan) as well 
as Microsoft IPsec VPN software can be configured with the required IKE policy 
parameters to establish an IPsec VPN tunnel. Refer to the client software guide for 
detailed instructions on setup as well as the router’s online help. 
To open this page: In the navigation tree, choose VPN > IPsec > VPN Users.
STEP 1 If you are using a Point-to-Point Tunneling Protocol VPN server, enter these 
settings in the PPTP Server Configuration section: 
• PPTP Server—Check the Enable box to enable this feature, or uncheck the 
box to disable it.
• Starting IP Address—Enter the starting IP address of the range of IP 
addresses for the PPTP VPN tunnel.
• Ending IP Address—Enter the ending IP address of the range of IP 
addresses for the PPTP VPN tunnel. The range can include up to 10 
addresses.
Note: The starting IP of the PPTP client IP range is used as the PPTP server 
IP of the router and the remaining PPTP client IP address range is used to 
assign IP address to PPTP clients. If the address range is within a VLAN 
range, the PPTP clients are members of that VLAN. Access to other VLANs 
is subject to the inter-VLAN routing settings. For example, if PPTP clients are 
on VLAN 3, and VLAN 2 prevents inter-VLAN routing, then the PPTP clients 
are unable to access resources on VLAN 2.
STEP  2 If you checked the Enable box for the PPTP Server, save your settings. You can 
add PPTP users only if you enabled the PPTP Server.
STEP  3 In the VPN Client Setting Table, perform these tasks:
• To add a client, click Add. Enter these settings:
- Enabled—For PPTP, check the box to activate the user account. Uncheck 
the box to de-activate the user account. This setting is not applicable to 
QuickVPN or XAUTH.