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This document describes how to set up an IKEv2 connection between the LANCOM Advanced VPN Client and a LANCOM R&S®Unified Firewall (referred to here as the United Firewall).
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The certificate module was updated in LCOS FX 10.7, therefore the corresponding menus differ compared to older LCOS FX versions. The configuration of a certificate-based IKEv2 connection between the Advanced VPN Client and a Unified Firewall as of LCOS FX 10.7 is described in the following article: |
Requirements:
- LANCOM R&S® Unified Firewall with LCOS FX as of version 10.4 and up to and including LCOS FX 10.6
- LANCOM Advanced VPN Client as of version 4.1
- A configured and functional Internet connection on the Unified Firewall
- Web browser for configuring the Unified Firewall.
The following browsers are supported:- Google Chrome
- Chromium
- Mozilla Firefox
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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 6).
1) Creating the CA and VPN certificates on the Unified Firewall:
1.1) Click Connect to the configuration interface of the Unified Firewall, go to the menu Certificate Management → Certificates and click on the "+" icon to create a new routing entry.
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2) Creating the VPN connection on the Unified Firewall:
2.1) Connect Navigate to the configuration interface of the Unified Firewall and navigate to VPN -> menu VPN → IPsec settings.
2.2) Activate IPsec.
2.3) Switch to VPN -> → IPsec Connections and click on the "+" icon to create a new IPsec connection.
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If you have created your own template or security profile, you can use these here.
2.5) Open then the Tunnels tab.
- 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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2.11) 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. |
Info: Firewall objects can also be accessed via Desktop -> Desktop connections and clicking on the "edit" icon.
2.12) Finally, implement the configuration changes by clicking Activate in the firewall.
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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. |
6.1) Open the configuration for the router in LANconfig and switch to the menu item IP-Router → Masq. → Port forwarding table.
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