¾ To create a new L2TP IPSec VPN connection, take these steps:
1. Click the link 'New Connection' in the screen 'Network Connections'; the screen 'Connection Wizard' opens.
2. Select the radio button 'Connect to a Virtual Private Network over the Internet' and click 'Next'; the screen 'Connect to a Virtual Private Network over the Internet' opens.
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3. Select the radio button 'VPN Client or Point-To-Point' and click 'Next'; the screen 'VPN Client or Point-To-Point' opens(refer to the figure).
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4. Check the radio button 'Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)' and click 'Next'; the screen 'Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)' opens (refer to the figure).
Figure 9-21: Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)
5. Enter the username and password provided by the administrator of the network you are trying to access.
6. Enter the IPSec shared secret, which is the encryption key jointly decided upon with the network you are trying to access.
7. Enter the remote tunnel endpoint address. This would be the IP address or domain name of the remote network computer, which serves as the tunnel's endpoint.
8. Click 'Next'; the screen 'Connection Summary' opens (refer to the figure).
Figure 9-22: Connection Summary
9. Check the check box 'Edit the Newly Created Connection' to be routed to the new connection's configuration screen after clicking 'Finish'.
10. Click 'Finish' to save the settings; the new L2TP IPSec VPN connection is added to the network connections list and is configurable like any other connection.
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9.4.2
Creating an L2TP IPSec VPN Connection with the Connection
Wizard
¾ To create a new L2TP IPSec VPN connection, take these steps:
1. Click the link 'New Connection' in the screen 'Network Connections'; the screen 'Connection Wizard' opens.
2. Select the radio button 'Connect to a Virtual Private Network over the Internet' and click 'Next'; the screen 'Connect to a Virtual Private Network over the Internet' opens.
3. Select the radio button 'VPN Client or Point-To-Point' and click 'Next'; the screen 'VPN Client or Point-To-Point' opens (refer to the figure).
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4. Select the radio button 'Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)' and click 'Next'; the screen 'Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)' opens (refer to the figure).
Figure 9-24: Layer 2 Tunneling Protocol over Internet Protocol Security (L2TP IPSec VPN)
5. Enter the username and password provided by the administrator of the network you are trying to access.
6. Enter the IPSec shared secret, which is the encryption key jointly decided upon with the network you are trying to access.
7. Enter the remote tunnel endpoint address. This would be the IP address or domain name of the remote network computer, which serves as the tunnel's endpoint.
8. Click Next. The 'Connection Summary' screen will appear (see figure 8.184).
Figure 9-25: Connection Summary
9. Check the check box 'Edit the Newly Created Connection' to be routed to the new connection's configuration screen after clicking 'Finish'.
10. Click 'Finish' to save the settings; the new L2TP IPSec VPN connection is added to the network connections list; it is configurable like any other connection.
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9.4.3 General
This section displays the connection's general parameters.
Table 9-9: General Settings
Parameter Description
Schedule By default, the connection is always active. However, you can configure scheduler rules (via Advanced>Scheduler Rules) in order to define time segments during which the connection may be active. Once a scheduler rule(s) is defined, this field changes to a drop-down list, allowing you to choose between the available rules.
Network Select whether the parameters you are configuring relate to a WAN, LAN or DMZ connection, by selecting the connection type from the drop-down list.
MTU MTU is the Maximum Transmission Unit. It specifies the largest packet size permitted for Internet transmission. When set to its default
(Automatic), the gateway selects the best MTU for your Internet
connection. Select 'Automatic by DHCP' for the DHCP to determine the MTU. If you select 'Manual', it is recommended to enter a value in the range of 1200 to 1500.
9.4.4 PPP Configuration
Refer to ''PPP Configuration'' on page 82
9.4.5 PPP Authentication
Refer to ''PPP Authentication'' on page 83
9.4.6 PPP Encryption
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9.4.7 PPP Compression
The PPP Compression Control Protocol (CCP) is responsible for configuring, enabling, and disabling data compression algorithms on both ends of the point-to-point link. It is also used to signal a failure of the compression/ decompression mechanism in a reliable manner.
Figure 9-26: PPP Compression
For each compression algorithm, select one of the following from the drop down menu:
Table 9-10: PPTP Compression Parameters
Parameter Description
Reject Reject PPP connections with peers that use the
compression algorithm.
Allow Allow PPP connections with peers that use the
compression algorithm.
Require Ensure a connection with a peer is using the
compression algorithm.
9.4.8 Internet Protocol
Refer to ''Internet Protocol Settings'' on page 79
9.4.9 DNS Server
Refer to ''DNS Server'' on page 80
9.4.10 Routing
Refer to ''Routing'' on page 80
9.4.11 Internet Connection Firewall
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