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Virtual Private Networking Using IPSec, PPTP, or L2TP Connections
312
ProSecure Unified Threat Management (UTM) Appliance
Assign IP Addresses to Remote Users (Mode Config)
• Mode Config Operation
• Configure Mode Config Operation on the UTM
• Configure the ProSafe VPN Client for Mode Config Operation
• Test the Mode Config Connection
• Modify or Delete a Mode Config Record
To simplify the process of connecting remote VPN clients to the UTM, use the Mode Config
feature to assign IP addresses to remote users automatically, including a network access IP
address, subnet mask, WINS server, and DNS address. Remote users are given IP
addresses available in a secured network space so that remote users appear as seamless
extensions of the network.
Mode Config Operation
After the IKE Phase 1 negotiation is complete, the VPN connection initiator (which is the
remote user with a VPN client) requests the IP configuration settings such as the IP address,
subnet mask, WINS server, and DNS address from the UTM. The Mode Config feature
allocates an IP address from the configured IP address pool and activates a temporary IPSec
policy, using the information that is specified in the Traffic Tunnel Security Level section of the
Mode Config record (on the Add Mode Config Record screen that is shown in Figure 185 on
page 314).
Note: After configuring a Mode Config record, you need to configure an
IKE policy manually, and select the newly created Mode Config
record from the Select Mode Config Record drop-down list (see
Configure Mode Config Operation on the UTM on page 312). You do
not need to change any VPN policy.
Note: An IP address that is allocated to a VPN client is released only after
the VPN client has gracefully disconnected or after the SA liftetime
for the connection has timed out.
Configure Mode Config Operation on the UTM
To configure Mode Config on the UTM, first create a Mode Config record, and then select the
Mode Config record for an IKE policy.