How To Configure Apple ipad for Cyberoam L2TP VPN Connection Applicable to Version: 10.00 (All builds) Layer 2 Tunneling Protocol (L2TP) can be used to create VPN tunnel over public networks such as the Internet. L2TP uses PPP over UDP (port 1701) to tunnel the data. This protocol is based on the client/server model. The function is divided between the L2TP Network Server (LNS), and the L2TP Access Concentrator (LAC). The LNS typically runs on a network gateway such as a router and firewall, while the LAC can be a dial-up Network Access Server (NAS), or a PC with a bundled L2TP client such as Microsoft Windows. This procedure outlines how to configure Cyberoam for L2TP connection (As a L2TP server) to Apple ipad devices (As a L2TP client) and create L2TP connection from Web Admin console: This document has 2 sections: Cyberoam Configuration Apple ipad Configuration Cyberoam Configuration The entire configuration is to be done from Web Admin Console. Access Web Admin Console with user having Administrator profile. Step 1: Configure L2TP Go to VPN L2TP Configuration to manage L2TP Configuration. Parameters Value General Settings Local IP Address PortA 172.16.16.16 Displays local IP address that will be assigned to L2TP server. Assign IP 192.168.1.10 192.168.1.100 Client Information Primary DNS Server 4.2.2.2 Secondary Server DNS Specify IP address range if L2TP server has to lease IP Addresses. 8.8.8.8
Click Apply button and the L2TP configuration will be added successfully. Step 2: Add Member Define L2TP Member from VPN L2TP Configuration Click Add Members button to add user or user groups to L2TP members list. A pop-up window is displayed to select the users. You can also select multiple users or user groups who are to be allowed access through L2TP Connection.
Click Apply button to add these users and user groups to the L2TP members list. Step 3: Create L2TP Connection Create L2TP Connection from VPN L2TP Connection and click on Add button with the following values: Parameters Name Policy Action on VPN Restart Authentication Details Authentication Type Preshared Key Value Branch Default L2TP Respond Only Preshared Key Specify the preshared key to be used
Confirm Preshared Key Local Network Details Confirm the preshared key to be used Local WAN Port PortB - 203.88.140.124 Select local server Remote Network Details Remote Host * Specify IP address of remote peer/host. Specify * for any IP address. Allow NAT Traversal Enabled Remote LAN Network Quick Mode Selectors Select IP addresses and netmask of remote network which is allowed to connect to the Cyberoam server through VPN tunnel. Local Port 1701 Remote Port Specify Remote Port for TCP or UDP. Enter * as the value for Remote Port. The reason is that Apple devices try to connect from a higher range of port.
Note: It is not necessary to define Local ID and Remote ID in L2TP configuration. Step 4: Activate Connection Go to VPN L2TP Connection and click on Red button under Active Status to activate the connection. Once the status is activated, button will be changed to green.
Apple ipad Configuration Configure Apple ipad device with the following Configuration: Step 1 Click on the main menu of ipad and Go to Settings General Network. Step 2 Then Click on VPN Add VPN Configuration and make sure to turn the VPN ON.
Enter the details as shown below: Parameters Value L2TP Description Cyberoam ipad L2TP Server 203.88.140.124 Account cyberoam Password Enter password Secret Specify Preshared Key
Step 3 After the above steps has been performed, set the VPN Connection status to ON and the VPN connection will be connected.
Step 4 Go to the Internet Browser on ipad to test whether the connectivity has been established or not. Document Version:1.0-24/05/2011