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- A company wants its sales representatives to have access to the corporate network via an IKEv2 client-to-site connection.
- The notebooks used by the sales representatives have the LANCOM Advanced VPN Client installed on them.
- The company headquarters has a Unified Firewall as a gateway with an Internet connection with the fixed public IP address 81.81.81.81.
- The local network at the headquarters has the IP address range 192.168.3.0/24.
2) The Unified Firewall is connected to the Internet via an upstream router:
- A company wants its sales representatives to have access to the corporate network via an IKEv2 client-to-site connection.
- The notebooks used by the sales representatives have the LANCOM Advanced VPN Client installed on them.
- The company headquarters has a Unified Firewall as the gateway and an upstream router for the Internet connection. The router has the fixed public IP address 81.81.81.81.
- The local network at the headquarters has the IP address range 192.168.3.0/24.
Procedure:
The setup for scenarios 1 and 2 are basically the same. Scenario 2 additionally requires port and protocol forwarding to be set up on the upstream router (see section 3).
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- Name: Enter a descriptive name.
- Security Profile: Here you select the ready-made profile LANCOM Advanced VPN Client IKEv2.
- Connection: Select your configured Internet connection.
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If you have created your own template or security profile, you can use these here. |
1.5) Change to the Tunnels tab and enter the following parameters:
- Local Networks: Here you enter the local networks (in CIDR notation) that the VPN client should reach. In this example, the local network at the headquarters has the IP address range 192.168.3.0/24.
- Virtual IP Pool: Select the option Default virtual IP pool. Virtual IP pools can be used to send IP address configurations to connected VPN clients.
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If an IP address from a local network should be assigned to the VPN client instead of an address from the Virtual IP Pool (via the field Virtual IP), Route-based IPSec has to be activated and a routing entry for the VPN interface has to be created in the Routing Table 254 which refers to the virtual IP address in the local network. |
1.6) Change to the Authentication tab and enter the following parameters:
- Authentication: Select the option PSK (Preshared Key).
- PSK (Preshared Key): Set a preshared key for this connection.
- Local Identifier: Set the local identifier.
- Remote identifier: Set the remote identifier.
Important:
The local and remote identifiers must not match!
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Due to security reasons different identities should be chosen for Local Identifier and Remote Identifier! |
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The Advanced VPN Client transmits the remote identity as an E-Mail address (ID_RFC822_ADDR). If the @ symbol isn't used in the remote identity, the Unified Firewall can't identify the identity type and the VPN connection can't be established. To enforce the use of the identity type E-Mail it is possible to use the string email: before the identity (e.g. email:home). |
1.7) Click the icon to create a new VPN host.
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1.10) Use the “+” sign to assign the required protocols to the VPN host.
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A Unified Firewall uses a deny-all strategy. You therefore have to explicitly allow communication |
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1.11) Implement the configuration changes by clicking Activate in the firewall.
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1.12) Change to the menu VPN → IPsec → Connections and click on the button Export this Connection.
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If necessary, click on the "double arrow" symbol to toggle in the detailed view where the button for profile export is located.
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1.13) Assign an Archive Password to encrypt the exported Zip archive.
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1.16) This concludes the configuration steps on the Unified Firewall.
2) Configuring the Advanced VPN Client:
2.1 Unpack Unpack the Zip file your exported in step 1.15 with a separate compression tool. In In it you will find an *.ini file, which you can import in the LANCOM Advanced VPN Client.
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The integrated compression tool in Windows does not support the Archive Password. Therefore the decompression process fails. |
2.2) Open the Advanced VPN Client and navigate to the menu Configuration -> → Profiles.
2.3) Click on Add / import to create a new VPN connection.
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2.8) Click on OK to close the Profiles menu.
2.9) The VPN client connection can now be established by clicking on the Connection switch.
3) Setting up port and protocol forwarding on a LANCOM router (scenario 2 only):
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Forwarding the UDP ports 500 and 4500 automatically causes the ESP protocol to be forwarded.
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If you are using a router from another manufacturer, ask them about appropriate procedure. |
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If the UDP ports 500 and 4500 and the ESP protocol are forwarded to the Unified Firewall, an IPSec connection to the LANCOM router can only be used if it is encapsulated in HTTPS (IPSec-over-HTTPS). Otherwise, no IPSec connection will be established. |
3.1) Open the configuration for the router in LANconfig and switch to the menu item IP-Router → Masq. → Port forwarding table.
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